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Chemical Structure| 23680-31-1 Chemical Structure| 23680-31-1

Structure of Boc-Ser(Bzl)-OH
CAS No.: 23680-31-1

Chemical Structure| 23680-31-1

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Synonyms: (S)-3-(Benzyloxy)-2-((tert-butoxycarbonyl)amino)propanoic acid

4.5 *For Research Use Only !

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Product Details of [ 23680-31-1 ]

CAS No. :23680-31-1
Formula : C15H21NO5
M.W : 295.33
SMILES Code : O=C(O)[C@@H](NC(OC(C)(C)C)=O)COCC1=CC=CC=C1
Synonyms :
(S)-3-(Benzyloxy)-2-((tert-butoxycarbonyl)amino)propanoic acid
MDL No. :MFCD00066063

Safety of [ 23680-31-1 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H315-H319-H335
Precautionary Statements:P261-P305+P351+P338

Computational Chemistry of [ 23680-31-1 ] Show Less

Physicochemical Properties

Num. heavy atoms 21
Num. arom. heavy atoms 6
Fraction Csp3 0.47
Num. rotatable bonds 9
Num. H-bond acceptors 5.0
Num. H-bond donors 2.0
Molar Refractivity 77.23
TPSA ?

Topological Polar Surface Area: Calculated from
Ertl P. et al. 2000 J. Med. Chem.

84.86 Ų

Lipophilicity

Log Po/w (iLOGP)?

iLOGP: in-house physics-based method implemented from
Daina A et al. 2014 J. Chem. Inf. Model.

2.58
Log Po/w (XLOGP3)?

XLOGP3: Atomistic and knowledge-based method calculated by
XLOGP program, version 3.2.2, courtesy of CCBG, Shanghai Institute of Organic Chemistry

1.9
Log Po/w (WLOGP)?

WLOGP: Atomistic method implemented from
Wildman SA and Crippen GM. 1999 J. Chem. Inf. Model.

2.03
Log Po/w (MLOGP)?

MLOGP: Topological method implemented from
Moriguchi I. et al. 1992 Chem. Pharm. Bull.
Moriguchi I. et al. 1994 Chem. Pharm. Bull.
Lipinski PA. et al. 2001 Adv. Drug. Deliv. Rev.

1.41
Log Po/w (SILICOS-IT)?

SILICOS-IT: Hybrid fragmental/topological method calculated by
FILTER-IT program, version 1.0.2, courtesy of SILICOS-IT, http://www.silicos-it.com

1.6
Consensus Log Po/w?

Consensus Log Po/w: Average of all five predictions

1.9

Water Solubility

Log S (ESOL):?

ESOL: Topological method implemented from
Delaney JS. 2004 J. Chem. Inf. Model.

-2.49
Solubility 0.966 mg/ml ; 0.00327 mol/l
Class?

Solubility class: Log S scale
Insoluble < -10 < Poorly < -6 < Moderately < -4 < Soluble < -2 Very < 0 < Highly

Soluble
Log S (Ali)?

Ali: Topological method implemented from
Ali J. et al. 2012 J. Chem. Inf. Model.

-3.3
Solubility 0.146 mg/ml ; 0.000496 mol/l
Class?

Solubility class: Log S scale
Insoluble < -10 < Poorly < -6 < Moderately < -4 < Soluble < -2 Very < 0 < Highly

Soluble
Log S (SILICOS-IT)?

SILICOS-IT: Fragmental method calculated by
FILTER-IT program, version 1.0.2, courtesy of SILICOS-IT, http://www.silicos-it.com

-3.31
Solubility 0.144 mg/ml ; 0.000488 mol/l
Class?

Solubility class: Log S scale
Insoluble < -10 < Poorly < -6 < Moderately < -4 < Soluble < -2 Very < 0 < Highly

Soluble

Pharmacokinetics

GI absorption?

Gatrointestinal absorption: according to the white of the BOILED-Egg

High
BBB permeant?

BBB permeation: according to the yolk of the BOILED-Egg

No
P-gp substrate?

P-glycoprotein substrate: SVM model built on 1033 molecules (training set)
and tested on 415 molecules (test set)
10-fold CV: ACC=0.72 / AUC=0.77
External: ACC=0.88 / AUC=0.94

No
CYP1A2 inhibitor?

Cytochrome P450 1A2 inhibitor: SVM model built on 9145 molecules (training set)
and tested on 3000 molecules (test set)
10-fold CV: ACC=0.83 / AUC=0.90
External: ACC=0.84 / AUC=0.91

No
CYP2C19 inhibitor?

Cytochrome P450 2C19 inhibitor: SVM model built on 9272 molecules (training set)
and tested on 3000 molecules (test set)
10-fold CV: ACC=0.80 / AUC=0.86
External: ACC=0.80 / AUC=0.87

No
CYP2C9 inhibitor?

Cytochrome P450 2C9 inhibitor: SVM model built on 5940 molecules (training set)
and tested on 2075 molecules (test set)
10-fold CV: ACC=0.78 / AUC=0.85
External: ACC=0.71 / AUC=0.81

No
CYP2D6 inhibitor?

Cytochrome P450 2D6 inhibitor: SVM model built on 3664 molecules (training set)
and tested on 1068 molecules (test set)
10-fold CV: ACC=0.79 / AUC=0.85
External: ACC=0.81 / AUC=0.87

No
CYP3A4 inhibitor?

Cytochrome P450 3A4 inhibitor: SVM model built on 7518 molecules (training set)
and tested on 2579 molecules (test set)
10-fold CV: ACC=0.77 / AUC=0.85
External: ACC=0.78 / AUC=0.86

No
Log Kp (skin permeation)?

Skin permeation: QSPR model implemented from
Potts RO and Guy RH. 1992 Pharm. Res.

-6.75 cm/s

Druglikeness

Lipinski?

Lipinski (Pfizer) filter: implemented from
Lipinski CA. et al. 2001 Adv. Drug Deliv. Rev.
MW ≤ 500
MLOGP ≤ 4.15
N or O ≤ 10
NH or OH ≤ 5

0.0
Ghose?

Ghose filter: implemented from
Ghose AK. et al. 1999 J. Comb. Chem.
160 ≤ MW ≤ 480
-0.4 ≤ WLOGP ≤ 5.6
40 ≤ MR ≤ 130
20 ≤ atoms ≤ 70

None
Veber?

Veber (GSK) filter: implemented from
Veber DF. et al. 2002 J. Med. Chem.
Rotatable bonds ≤ 10
TPSA ≤ 140

0.0
Egan?

Egan (Pharmacia) filter: implemented from
Egan WJ. et al. 2000 J. Med. Chem.
WLOGP ≤ 5.88
TPSA ≤ 131.6

0.0
Muegge?

Muegge (Bayer) filter: implemented from
Muegge I. et al. 2001 J. Med. Chem.
200 ≤ MW ≤ 600
-2 ≤ XLOGP ≤ 5
TPSA ≤ 150
Num. rings ≤ 7
Num. carbon > 4
Num. heteroatoms > 1
Num. rotatable bonds ≤ 15
H-bond acc. ≤ 10
H-bond don. ≤ 5

0.0
Bioavailability Score?

Abbott Bioavailability Score: Probability of F > 10% in rat
implemented from
Martin YC. 2005 J. Med. Chem.

0.56

Medicinal Chemistry

PAINS?

Pan Assay Interference Structures: implemented from
Baell JB. & Holloway GA. 2010 J. Med. Chem.

0.0 alert
Brenk?

Structural Alert: implemented from
Brenk R. et al. 2008 ChemMedChem

0.0 alert: heavy_metal
Leadlikeness?

Leadlikeness: implemented from
Teague SJ. 1999 Angew. Chem. Int. Ed.
250 ≤ MW ≤ 350
XLOGP ≤ 3.5
Num. rotatable bonds ≤ 7

No; 1 violation:MW<1.0
Synthetic accessibility?

Synthetic accessibility score: from 1 (very easy) to 10 (very difficult)
based on 1024 fragmental contributions (FP2) modulated by size and complexity penaties,
trained on 12'782'590 molecules and tested on 40 external molecules (r2 = 0.94)

3.21

Application In Synthesis of [ 23680-31-1 ]

* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.

  • Downstream synthetic route of [ 23680-31-1 ]

[ 23680-31-1 ] Synthesis Path-Downstream   1~42

  • 1
  • [ 23680-31-1 ]
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  • 2
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  • [ 20806-43-3 ]
  • 3
  • [ 23680-31-1 ]
  • [ 40350-83-2 ]
  • (±)-1-azafagomine [ No CAS ]
  • [ 541-88-8 ]
  • (2S,4R)-1-{(2S,4R)-1-[2-(4,5-Dihydroxy-3-hydroxymethyl-tetrahydro-pyridazin-1-yl)-acetyl]-4-hydroxy-pyrrolidine-2-carbonyl}-4-hydroxy-pyrrolidine-2-carboxylic acid ((S)-1-carbamoyl-2-hydroxy-ethyl)-amide [ No CAS ]
  • 4
  • [ 15761-39-4 ]
  • [ 13734-41-3 ]
  • [ 13139-15-6 ]
  • [ 15761-38-3 ]
  • C16H28N3O5PolS [ No CAS ]
  • [ 7536-55-2 ]
  • [ 13726-85-7 ]
  • [ 13574-13-5 ]
  • [ 13836-37-8 ]
  • [ 23680-31-1 ]
  • [ 47355-10-2 ]
  • [ 83468-83-1 ]
  • Fmoc-Asp-Cys(Acm)-His-Leu-Gln-Ala-Val-Val-Leu-His-Leu-Ala-Arg-Arg-Ser-Val-Cys(Acm)-Val-His-Pro-Gln-Asn-Arg-Ser-Leu-Ala-Arg-Trp-Leu-Glu-Arg-Gln-Gly-S-CH2CH2CO-Leu-NH2 [ No CAS ]
  • 5
  • [ 4530-20-5 ]
  • [ 15761-39-4 ]
  • [ 13139-15-6 ]
  • C14H14NPol [ No CAS ]
  • [ 13836-37-8 ]
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  • [ 47689-67-8 ]
  • [ 47355-10-2 ]
  • [ 53100-44-0 ]
  • [ 35899-43-5 ]
  • [ 33515-09-2 ]
YieldReaction ConditionsOperation in experiment
General procedure: The peptides were synthesized manually accordingly to the standard Boc protocol [1] and [3]. In the Boc chemistry, after coupling the C-terminal amino acid to the resin, the successive alpha-amino group deprotection and neutralization steps were performed in 30% TFA/DCM (30 min) and 10% TEA/DCM (10 min). The amino acids were coupled with 3-fold excess, using DIC/HOBt in DMF and, if necessary, Boc-amino acid/(N-[(1H-benzotriazol-1-yl)-(dimethylaminomethylene)]-N-methylmethanaminium hexafluorophosphate N-oxide (HBTU)/HOBt (1:1:1), in the presence of excess of diisopropylethylamine (DIEA, 5 equiv.) using 20% DMSO/NMP as the solvent system. After a 3-h coupling period, the qualitative ninhydrin test was performed to estimate the completeness of the reaction. To check the purity of the synthesized peptide sequence attached to the resin, cleavage reactions with small aliquots of resin were carried out in anhydrous HF, at 0 C for 2 h.
  • 6
  • [ 15761-39-4 ]
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  • [ 47689-67-8 ]
  • [ 47355-10-2 ]
  • [ 83468-83-1 ]
  • [ 65420-40-8 ]
  • HSQGTFTSDYSKYLDSRRAQDFVQWLMNGGPSSGAPPPS-NH2 [ No CAS ]
  • 7
  • [ 13139-15-6 ]
  • [ 15761-38-3 ]
  • [ 2488-15-5 ]
  • [ 15260-10-3 ]
  • [ 23680-31-1 ]
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  • [ 73821-97-3 ]
  • [ 54613-99-9 ]
  • [ 47355-10-2 ]
  • [ 83468-83-1 ]
  • [ 65420-40-8 ]
  • HSQGTFTSDYSKYLDERRAKDFVQWLMNT-NH2 [ No CAS ]
  • 8
  • [ 13139-15-6 ]
  • [ 15761-38-3 ]
  • [ 2488-15-5 ]
  • [ 15260-10-3 ]
  • [ 23680-31-1 ]
  • [ 73821-95-1 ]
  • [ 54613-99-9 ]
  • [ 47689-67-8 ]
  • [ 47355-10-2 ]
  • [ 83468-83-1 ]
  • [ 65420-40-8 ]
  • HSQGTFTSDYSKYLDSRRAQDFVQWLMNT-OH [ No CAS ]
  • 9
  • [ 13139-15-6 ]
  • [ 15761-38-3 ]
  • [ 2488-15-5 ]
  • [ 15260-10-3 ]
  • [ 23680-31-1 ]
  • [ 73821-95-1 ]
  • [ 54613-99-9 ]
  • [ 47689-67-8 ]
  • [ 47355-10-2 ]
  • [ 83468-83-1 ]
  • [ 65420-40-8 ]
  • HSQGTFTSDYSKYLDERRAQDFVQWLMNT-NH2 [ No CAS ]
  • 10
  • [ 13139-15-6 ]
  • [ 15761-38-3 ]
  • [ 2488-15-5 ]
  • [ 15260-10-3 ]
  • [ 23680-31-1 ]
  • [ 73821-95-1 ]
  • [ 54613-99-9 ]
  • [ 47689-67-8 ]
  • [ 47355-10-2 ]
  • [ 83468-83-1 ]
  • [ 65420-40-8 ]
  • HSQGTFTSDYSKYLDSRRAKDFVQWLMNT-NH2 [ No CAS ]
  • 11
  • [ 4530-20-5 ]
  • [ 13139-16-7 ]
  • [ 13139-15-6 ]
  • [ 15761-38-3 ]
  • [ 23680-31-1 ]
  • [ 73821-95-1 ]
  • [ 73821-97-3 ]
  • [ 54613-99-9 ]
  • [ 47689-67-8 ]
  • [ 47355-10-2 ]
  • [ 83468-83-1 ]
  • HAEGTFTSDVSSYLEEQAAKEFIAWLVKG-NH2 [ No CAS ]
  • 12
  • [ 4530-20-5 ]
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  • [ 13139-15-6 ]
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  • [ 73821-97-3 ]
  • [ 54613-99-9 ]
  • [ 47689-67-8 ]
  • [ 47355-10-2 ]
  • [ 83468-83-1 ]
  • HAEGTFTSDVSSYLEGQAAKEFIAWLVKG-NH2 [ No CAS ]
  • 13
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  • [ 13139-15-6 ]
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  • [ 73821-95-1 ]
  • [ 73821-97-3 ]
  • [ 54613-99-9 ]
  • [ 47689-67-8 ]
  • [ 47355-10-2 ]
  • [ 83468-83-1 ]
  • HAEGTFTSDVSSYLEGQAAKEFIAWLVKGG-NH2 [ No CAS ]
  • 14
  • [ 15761-39-4 ]
  • [ 13139-15-6 ]
  • [ 15761-38-3 ]
  • [ 13836-37-8 ]
  • [ 23680-31-1 ]
  • [ 73821-95-1 ]
  • [ 54613-99-9 ]
  • [ 47689-67-8 ]
  • [ 47355-10-2 ]
  • [ 83468-83-1 ]
  • [ 65420-40-8 ]
  • HSQGTFTSDYSKYLDSRRAQDFVQWLMNTGPSSGAPPPS-NH2 [ No CAS ]
  • 15
  • [ 13139-16-7 ]
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  • [ 15761-38-3 ]
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  • [ 73821-95-1 ]
  • [ 54613-99-9 ]
  • [ 47355-10-2 ]
  • [ 83468-83-1 ]
  • [ 65420-40-8 ]
  • HSQGTFTSDYSKYLDSRRAQDFVQWLMNTKRNRNNIA-OH [ No CAS ]
  • 16
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  • [ 23680-31-1 ]
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  • [ 73821-97-3 ]
  • [ 54613-99-9 ]
  • [ 47689-67-8 ]
  • [ 47355-10-2 ]
  • [ 83468-83-1 ]
  • HAEGTFTSDVSSYLEGQAAKEFIAWLVKGR-NH2 [ No CAS ]
  • 17
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  • [ 13836-37-8 ]
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  • [ 73821-95-1 ]
  • [ 73821-97-3 ]
  • [ 47355-10-2 ]
  • [ 83468-83-1 ]
  • [ 65420-40-8 ]
  • HAEGTFTSDVSSYLEERRAQDFVQWLMNT-NH2 [ No CAS ]
  • 18
  • [ 4530-20-5 ]
  • [ 15761-39-4 ]
  • [ 13734-41-3 ]
  • [ 13139-16-7 ]
  • [ 13139-15-6 ]
  • [ 15761-38-3 ]
  • [ 13734-34-4 ]
  • [ 23680-31-1 ]
  • [ 54613-99-9 ]
  • [ 47355-10-2 ]
  • HAEGTFTSDVSSYLEEQAAKEFIAWLVKGGPSSGAPPPS-NH2 [ No CAS ]
  • 19
  • [ 4530-20-5 ]
  • [ 15761-39-4 ]
  • [ 13734-41-3 ]
  • [ 13139-16-7 ]
  • [ 13139-15-6 ]
  • [ 15761-38-3 ]
  • [ 13734-34-4 ]
  • [ 23680-31-1 ]
  • [ 54613-99-9 ]
  • [ 47355-10-2 ]
  • HAEGTFTSDVSSYLEGQAAKEFIAWLVKGGPSSGAPPPS-NH2 [ No CAS ]
  • 20
  • [ 4530-20-5 ]
  • [ 15761-39-4 ]
  • [ 13139-15-6 ]
  • [ 15761-38-3 ]
  • [ 23680-31-1 ]
  • [ 73821-97-3 ]
  • [ 54613-99-9 ]
  • [ 47355-10-2 ]
  • [ 83468-83-1 ]
  • [ 65420-40-8 ]
  • HGEGTFTSDLSKQMEEEAVRLFIEWLKNGGPSSGAPPPS-NH2 [ No CAS ]
  • 21
  • [ 13734-41-3 ]
  • [ 13139-15-6 ]
  • [ 15761-38-3 ]
  • [ 2488-15-5 ]
  • [ 13726-85-7 ]
  • [ 13734-34-4 ]
  • [ 15260-10-3 ]
  • [ 13836-37-8 ]
  • [ 23680-31-1 ]
  • [ 73821-95-1 ]
  • [ 47355-10-2 ]
  • [ 65420-40-8 ]
  • HSQGTFTSDYSKYLDSRRAQDFVQWLMNT-NH2 [ No CAS ]
  • 22
  • [ 13139-16-7 ]
  • [ 13139-15-6 ]
  • [ 2488-15-5 ]
  • [ 13734-34-4 ]
  • [ 15260-10-3 ]
  • [ 23680-31-1 ]
  • [ 47355-10-2 ]
  • [ 423763-38-6 ]
  • 23
  • [ 4530-20-5 ]
  • [ 15761-39-4 ]
  • [ 13734-41-3 ]
  • [ 13139-16-7 ]
  • [ 13139-15-6 ]
  • [ 27144-18-9 ]
  • [ 15260-10-3 ]
  • [ 23680-31-1 ]
  • [ 61925-77-7 ]
  • [ 54613-99-9 ]
  • [ 47355-10-2 ]
  • cycloCGETCVGGTCNTPGCTCSWPVCQIPGLGPL cyclic (1->15),(5->17),(10->22)-tris(disulfide) [ No CAS ]
  • 24
  • N-Boc-L-Sec(4-MeBzl)-OH [ No CAS ]
  • 4-methylbenzylhydrylamine resin [ No CAS ]
  • [ 15761-39-4 ]
  • [ 15761-38-3 ]
  • [ 13836-37-8 ]
  • [ 23680-31-1 ]
  • [ 73821-95-1 ]
  • [ 47355-10-2 ]
  • C103H120N17O17PolS2Se2 [ No CAS ]
  • 25
  • polyethylene glycol polyamide resin [ No CAS ]
  • [ 15761-39-4 ]
  • [ 23680-31-1 ]
  • [ 61925-77-7 ]
  • [ 47689-67-8 ]
  • [ 170384-29-9 ]
  • C60H69BrN7O13PolS [ No CAS ]
  • 26
  • [ 13734-41-3 ]
  • [ 13139-15-6 ]
  • [ 19746-37-3 ]
  • [ 15260-10-3 ]
  • [ 13836-37-8 ]
  • C15H20NO5Pol [ No CAS ]
  • [ 23680-31-1 ]
  • [ 73821-95-1 ]
  • [ 61925-77-7 ]
  • [ 54613-99-9 ]
  • [ 85613-64-5 ]
  • [ 47355-10-2 ]
  • [ 83468-83-1 ]
  • [ 170384-29-9 ]
  • H-CC(Acm)KHLVC(Acm)SRRHGWC(Acm)VWDGTFS-OH [ No CAS ]
  • 27
  • [ 13734-41-3 ]
  • [ 13139-15-6 ]
  • [ 15260-10-3 ]
  • [ 13836-37-8 ]
  • C15H20NO5Pol [ No CAS ]
  • [ 23680-31-1 ]
  • [ 73821-95-1 ]
  • [ 61925-77-7 ]
  • [ 54613-99-9 ]
  • [ 85613-64-5 ]
  • [ 47355-10-2 ]
  • [ 83468-83-1 ]
  • [ 170384-29-9 ]
  • H-CCKHLVCSRRHGWCVWDGTFS-OH [ No CAS ]
  • 28
  • [ 13139-15-6 ]
  • [ 15761-38-3 ]
  • [ 19746-37-3 ]
  • [ 13726-85-7 ]
  • [ 13836-37-8 ]
  • C25H38N3O6PolS [ No CAS ]
  • [ 23680-31-1 ]
  • [ 73821-97-3 ]
  • [ 47689-67-8 ]
  • [ 47355-10-2 ]
  • [ 170384-29-9 ]
  • C120H161BrN23O31PolS4 [ No CAS ]
  • 29
  • [ 13139-15-6 ]
  • [ 15761-38-3 ]
  • [ 13726-85-7 ]
  • [ 13836-37-8 ]
  • C25H38N3O6PolS [ No CAS ]
  • [ 23680-31-1 ]
  • [ 61925-77-7 ]
  • [ 73821-97-3 ]
  • [ 47689-67-8 ]
  • [ 47355-10-2 ]
  • [ 170384-29-9 ]
  • C130H167BrN21O29PolS4 [ No CAS ]
  • 30
  • [ 13139-15-6 ]
  • [ 15761-38-3 ]
  • [ 13726-85-7 ]
  • [ 13836-37-8 ]
  • C20H36N3O5PolS [ No CAS ]
  • [ 23680-31-1 ]
  • [ 61925-77-7 ]
  • [ 73821-97-3 ]
  • [ 47689-67-8 ]
  • [ 47355-10-2 ]
  • [ 170384-29-9 ]
  • C125H165BrN21O28PolS4 [ No CAS ]
  • 31
  • [ 15761-39-4 ]
  • [ 13139-15-6 ]
  • [ 15761-38-3 ]
  • [ 13726-85-7 ]
  • [ 13139-16-7 ]
  • [ 15260-10-3 ]
  • [ 13836-37-8 ]
  • C8H14NO4Pol [ No CAS ]
  • [ 23680-31-1 ]
  • [ 73821-95-1 ]
  • [ 61925-77-7 ]
  • [ 54613-99-9 ]
  • [ 47689-67-8 ]
  • [ 47355-10-2 ]
  • [ 65420-40-8 ]
  • [ 170384-29-9 ]
  • H-CKGLKADSGYCWGWTLSCYCQGLPDNARIKRSGRCRA-OH [ No CAS ]
  • 32
  • polyethylene glycol polyamide resin [ No CAS ]
  • [ 13139-15-6 ]
  • [ 15761-38-3 ]
  • [ 13139-16-7 ]
  • [ 15260-10-3 ]
  • [ 13836-37-8 ]
  • [ 23680-31-1 ]
  • [ 61925-77-7 ]
  • [ 73821-97-3 ]
  • [ 47689-67-8 ]
  • [ 83468-83-1 ]
  • [ 65420-40-8 ]
  • [ 170384-29-9 ]
  • H-CSCRLYELLHGAGNHAAGILTL-NH2 [ No CAS ]
  • 33
  • [ 4530-20-5 ]
  • [ 15761-38-3 ]
  • [ 15260-10-3 ]
  • [ 13836-37-8 ]
  • [ 23680-31-1 ]
  • [ 32159-21-0 ]
  • [ 73821-95-1 ]
  • [ 61925-77-7 ]
  • [ 54613-99-9 ]
  • [ 47355-10-2 ]
  • [ 83468-83-1 ]
  • rerdused μ-conotoxin SIIIA [ No CAS ]
  • 34
  • [ 4530-20-5 ]
  • Boc-Gly-PAM resin [ No CAS ]
  • [ 15761-39-4 ]
  • [ 13139-15-6 ]
  • [ 15761-38-3 ]
  • [ 13836-37-8 ]
  • [ 23680-31-1 ]
  • [ 61925-77-7 ]
  • [ 47355-10-2 ]
  • NH<SUB>2</SUB>-CAASARARGGAGRSAAGLLRAAGPRWRRLAAALAAAGRAAG-OH [ No CAS ]
  • 35
  • [ 15761-39-4 ]
  • [ 13734-41-3 ]
  • [ 13139-15-6 ]
  • [ 15761-38-3 ]
  • [ 15260-10-3 ]
  • [ 13836-37-8 ]
  • Boc-Asn(Xan)-MPA-Leu-MBHA resin [ No CAS ]
  • [ 23680-31-1 ]
  • [ 73821-95-1 ]
  • [ 73821-97-3 ]
  • [ 47355-10-2 ]
  • Boc-Lys(ClZ) [ No CAS ]
  • Boc-His(Bom) [ No CAS ]
  • C117H189N39O32S [ No CAS ]
  • 36
  • [ 4530-20-5 ]
  • [ 13734-41-3 ]
  • [ 13139-16-7 ]
  • [ 13139-15-6 ]
  • [ 15761-38-3 ]
  • [ 13734-34-4 ]
  • [ 15260-10-3 ]
  • [ 13836-37-8 ]
  • Boc-Thr(benzyl)-PAM dicyclohexylammonium salt [ No CAS ]
  • [ 23680-31-1 ]
  • [ 73821-95-1 ]
  • [ 73821-97-3 ]
  • [ 47689-67-8 ]
  • [ 42294-52-0 ]
  • [ 47355-10-2 ]
  • [ 65420-40-8 ]
  • [ 25024-53-7 ]
  • Boc-Lys(Pg)-OH [ No CAS ]
  • Boc-Gln(Pg)-OH [ No CAS ]
  • CSQFNDTLNVYLTAHNALGSSLHTAGVDLAKSLRIAAKIYSEADEAWRKAIDGLFT [ No CAS ]
  • 37
  • boc-O-benzyl-threonine resin [ No CAS ]
  • [ 13734-41-3 ]
  • [ 13139-15-6 ]
  • [ 15761-38-3 ]
  • [ 2488-15-5 ]
  • [ 13734-34-4 ]
  • [ 15260-10-3 ]
  • [ 13836-37-8 ]
  • [ 23680-31-1 ]
  • [ 73821-95-1 ]
  • [ 61925-77-7 ]
  • [ 54613-99-9 ]
  • [ 47689-67-8 ]
  • [ 47355-10-2 ]
  • [ 65420-40-8 ]
  • [ 98115-14-1 ]
  • [ 20866-46-0 ]
  • His-Ser-Gln-Gly-Thr-Phe-Thr-Ser-Asp-Tyr-Ser-Lys-Tyr-Leu-Asp-Ser-Cys-Arg-Ala-Gln-Asp-Phe-Val-Gln-Trp-Leu-Met-Asn-Thr [ No CAS ]
YieldReaction ConditionsOperation in experiment
EXAMPLE 1 Synthesis of Glucagon Cys17(1-29) and Similar MonoCys Analogs (0283) 0.2mmole Boc Thr(OBzl) Pam resin (SynChem Inc) in a 60ml reaction vessel and the following sequence was entered and run on a modified Applied Biosystems 430A Peptide Synthesizer using FastBoc HBTU-activated single couplings. (0284) HSQGTFTSDYSKYLDSCRAQDFVQWLMNT (SEQ ID NO: 35) The following side chain protecting groups were used: Arg(Tos), Asp(OcHex), Asn(Xan), Cys(pMeBzl), Glu(OcHex), His(Boc), Lys(2Cl-Z), Ser(Bzl), Thr(Bzl), Trp(CHO), and Tyr(Br-Z). The completed peptidyl resin was treated with 20% piperidine/dimethylformamide to remove the Trp formyl protection then transferred to an HF reaction vessel and dried in vacuo. 1.0ml p-cresol and 0.5 ml dimehyl sulfide were added along with a magnetic stir bar. The vessel was attached to the HF apparatus (Pennisula Labs), cooled in a dry ice/methanol bath, evacuated, and aprox. 10ml liquid hydrogen fluoride was condensed in. The reaction was stirred in an ice bath for 1hr then the HF was removed in vacuo. The residue was suspended in ethyl ether; the solids were filtered, washed with ether, and the peptide extracted into 50 ml aqueous acetic acid. An analytical HPLC was run [0.46 x 5 cm Zorbax C8, 1 ml/min, 45C, 214nm, A buffer of 0.1%TFA, B buffer of 0.1%TFA/90%ACN, gradient=10%B to 80%B over 10min.] with a small sample of the cleavage extract. The remaining extract was loaded onto a 2.2 x 25cm Kromasil C18 preparative reverse phase column and an acetonitrile gradient was run using a Pharmacia FPLC system. 5min fractions were collected while monitoring the UV at 214nm (2.0A). A=0.1%TFA, B=0.1%TFA/50%acetonitrile. Gradient = 30%B to 100%B over 450min. (0285) The fractions containing the purest product (48-52) were combined frozen, and lyophilized to give 30.1mg. An HPLC analysis of the product demonstrated a purity of>90% and MALDI mass spectral analysis demonstrated the desired mass of 3429.7. Glucagon Cys21, Glucagon Cys24, and Glucagon Cys29 were similarly prepared.
  • 38
  • [ 15761-39-4 ]
  • [ 13734-41-3 ]
  • [ 13139-15-6 ]
  • [ 15761-38-3 ]
  • [ 2488-15-5 ]
  • [ 13734-34-4 ]
  • [ 15260-10-3 ]
  • [ 13836-37-8 ]
  • [ 23680-31-1 ]
  • [ 73821-95-1 ]
  • [ 61925-77-7 ]
  • [ 54613-99-9 ]
  • [ 47689-67-8 ]
  • [ 47355-10-2 ]
  • [ 65420-40-8 ]
  • [ 98115-14-1 ]
  • [ 20866-46-0 ]
  • HSQGTFTSDYSKYLDSRRAQDFVQWLMNTGPSSGAPPPS [ No CAS ]
YieldReaction ConditionsOperation in experiment
198.1 mg EXAMPLE 2 Synthesis of Glucagon-Cex and Other C-Terminal Extended Analogs. (0286) 285mg (0.2mmole) methoxybenzhydrylamine resin (Midwest Biotech) was placed in a 60ml reaction vessel and the following sequence was entered and run on a modified Applied Biosystems 430A peptide synthesizer using FastBoc HBTU-activated single couplings. (0287) HSQGTFTSDYSKYLDSRRAQDFVQWLMNTGPSSGAPPPS (SEQ ID NO: 36) The following side chain protecting groups were used: Arg(Tos), Asp(OcHex), Asn(Xan), Cys(pMeBzl), Glu(OcHex), His(Boc), Lys(2Cl-Z), Ser(Bzl), Thr(Bzl), Trp(CHO), and Tyr(Br-Z). The completed peptidyl resin was treated with 20% piperidine/dimethylformamide to remove the Trp formyl protection then transferred to HF reaction vessel and dried in vacuo. 1.0ml p-cresol and 0.5 ml dimehyl sulfide were added along with a magnetic stir bar. The vessel was attached to the HF apparatus (Pennisula Labs), cooled in a dry ice/methanol bath, evacuated, and aprox. 10ml liquid hydrogen fluoride was condensed in. The reaction was stirred in an ice bath for 1hr then the HF was removed in vacuo. The residue was suspended in ethyl ether; the solids were filtered, washed with ether, and the peptide extracted into 50 ml aqueous acetic acid. An analytical HPLC was run [0.46 x 5 cm Zorbax C8, 1 ml/min, 45C, 214nm, A buffer of 0.1%TFA, B buffer of 0.1%TFA/90%ACN, gradient=10%B to 80%B over 10min.] on an aliquot of the cleavage extract. The extract was loaded onto a 2.2 x 25cm Kromasil C18 preparative reverse phase column and an acetonitrile gradient was run for elution using a Pharmacia FPLC system. 5min fractions were collected while monitoring the UV at 214nm (2.0A). A=0.1%TFA, B=0.1%TFA/50%acetonitrile. Gradient = 30%B to 100%B over 450min. Fractions 58-65 were combined, frozen and lyophilized to give 198.1mg. (0288) HPLC analysis of the product showed a purity of greater than 95%. MALDI mass spectral analysis showed the presence of the desired theoretical mass of 4316.7 with the product as a C-terminal amide. Oxyntomodulin and oxyntomodulin-KRNR were similarly prepared as the C-terminal carboxylic acids starting with the appropriately loaded PAM-resin.
  • 39
  • [ 13734-41-3 ]
  • [ 13139-15-6 ]
  • [ 15761-38-3 ]
  • [ 2488-15-5 ]
  • [ 13734-34-4 ]
  • [ 15260-10-3 ]
  • [ 13836-37-8 ]
  • [ 23680-31-1 ]
  • [ 73821-95-1 ]
  • [ 123417-18-5 ]
  • [ 84624-27-1 ]
  • [ 47689-67-8 ]
  • [ 47355-10-2 ]
  • [ 83468-83-1 ]
  • [ 65420-40-8 ]
  • [ 98115-14-1 ]
  • HSQGTFTSDYSKYLDERRAQDFVQWLMNT-NH2, lactam 12-16 [ No CAS ]
YieldReaction ConditionsOperation in experiment
EXAMPLE 11 Synthesis of Glucagon Lactams (0299) 285 mg (0.2 mmole) methoxybenzhydrylamine resin (Midwest Biotech) was added to a 60 mL reaction vessels and the following sequence was assembled on a modified Applied Biosystems 430A peptide synthesizer using Boc DEPBT-activated single couplings. HSQGTFTSDYSKYLDERRAQDFVQWLMNT-NH2 (12-16 Lactam; SEQ ID NO: 12) (0300) The following side chain protecting groups were used: Arg(Tos), Asp(OcHx), Asn(Xan), Glu(OFm), His(BOM), Lys(Fmoc), Ser(Bzl), Thr(Bzl), Trp(CHO), Tyr(Br-Z). Lys(Cl-Z) was used at position 12 if lactams were constructed from 16-20, 20-24, or 24-28. The completed peptidyl resin was treated with 20% piperidine/dimethylformamide for one hour with rotation to remove the Trp formyl group as well as the Fmoc and OFm protection from Lys12 and Glu16. Upon confirmation of removal by a positive ninhydrin test, the resin was washed with dimethylformamide, followed by dichloromethane and than again with dimethylformamide. The resin was treated with 520 mg (1 mmole) Benzotriazole-1-yl-oxy-tris-pyrrolidino-phosphonium hexafluorophosphate (PyBOP) in dimethylformamide and diisopropylethylamine (DIEA). The reaction proceeded for 8-10 hours and the cyclization was confirmed by a negative ninhydrin reaction. The resin was washed with dimethylformamide, followed by dichloromethane and subsequently treated with trifluoroacetic acid for 10 minutes. The removal of the Boc group was confirmed by a positive ninhydrin reaction. The resin was washed with dimethylformamide and dichloromethane and dried before being transferred to a hydrofluoric acid (HF) reaction vessel. 500 muL p-cresol was added along with a magnetic stir bar. The vessel was attached to the HF apparatus (Peninsula Labs), cooled in a dry ice/methanol bath, evacuated, and approximately 10 mL of liquid hydrofluoric acid was condensed into the vessel. The reaction was stirred for 1 hour in an ice bath and the HF was subsequently removed in vacuo. The residue was suspended in ethyl ether; the solids were filtered, washed with ether, and the peptide was solubilized with 150 mL 20% acetonitrile/1% acetic acid. (0301) An analytical HPLC analysis of the crude solubilized peptide was conducted under the following conditions [4.6 X 30 mm Xterra C8, 1.50 mL/min, 220 nm, A buffer 0.1% TFA/10% ACN, B buffer 0.1% TFA/100% ACN, gradient 5-95%B over 15 minutes]. The extract was diluted twofold with water and loaded onto a 2.2 X 25 cm Vydac C4 preparative reverse phase column and eluted using an acetonitrile gradient on a Waters HPLC system (A buffer of 0.1% TFA/10% ACN, B buffer of 0.1% TFA/10% CAN and a gradient of 0-100% B over 120 minutes at a flow of 15.00 ml/min. HPLC analysis of the purified peptide demonstrated greater than 95% purity and electrospray ionization mass spectral analysis confirmed a mass of 3506 Da for the 12-16 lactam. Lactams from 16-20, 20-24, and 24-28 were prepared similarly.
  • 40
  • [ 15761-39-4 ]
  • [ 13734-41-3 ]
  • [ 13139-15-6 ]
  • [ 15761-38-3 ]
  • [ 13726-85-7 ]
  • [ 29022-11-5 ]
  • [ 13734-34-4 ]
  • [ 13836-37-8 ]
  • 2-(decyldisulfanyl)pyridine [ No CAS ]
  • [ 23680-31-1 ]
  • [ 122889-11-6 ]
  • [ 73821-97-3 ]
  • [ 54613-99-9 ]
  • [ 25024-53-7 ]
  • fmoc-S-4-methoxytrityl-L-cysteine [ No CAS ]
  • C151H256N48O39S [ No CAS ]
YieldReaction ConditionsOperation in experiment
10.2% The titled peptide was synthesized on a model 430A peptide synthesizer (Applied Rio systems, Foster City, Calif., U.S.A.) which was modified to do accelerated Hoc-chemistry solid phase peptide synthesis (Schnolzer, M. et al., mt. J Peptide Protein Res., (1992), 40:180). 4-Methylbenzhydry- lamine (MHHA) resin (Peninsula, Helmont, Calif., U.S.A.), with a substitution of0.91 mmol/g was used. Hoc amino acids (Midwest Hio-Tech, Fishers, Ind., U.S.A.; Novabiochem., San Diego, Calif., U.S.A.) were used with the following side chain protection: Hoc-Ala-OH, Hoc-Arg(Tos)-OH, Hoc-His (DNP)-OH, Hoc-Val-OH, Hoc-Ecu-OH, Hoc-Gly-OH, HocGln-OH, Hoc-Eys(2C1Z)?--OH, Hoc-Ser(Hzl)-OH, Hoc-PheOH, Hoc-Glu(OcHex)-OH and Hoc-Pro-OH. Fmoc-Glu (OtHu)-OH (Novabiochem, San Diego, Calif., U.S.A.) was used for the residue at the 3rd position in the sequence. The synthesis was carried out on a 0.25 mmol scale. The Hoc groups were removed by two treatments with 100percent TFA each lasting one minute. Hoc amino acids (2.5 mmol) were preactivated with HH11J (2.0 mmol) and DIEA (1.0 mE) in 4 mE of DMF and were coupled without prior neutralization of the peptide-resin TFA salt. Coupling times were 5 minutes. At the end of the assembly of the first 25 residues on theAHI 430A® peptide synthesizer and before the coupling of Fmoc-Glu (OtHu)-OH, the protected peptide-resin was transferred into a reaction vessel on a shaker for manual synthesis. After removing the Hoc protecting group with two, one-minute treatments with 100percent TFA and a washing with DMF, the resin was mixed with Fmoc-Glu(OtHu)-OH (2.5 mmol) which was preactivated with HHTU (2.0 mmol), HOHt (2.0 mmol) and DIEA (1.0 mE) in 4 mE of DMF. The mixture was shaken for 2 hours. This coupling step was repeated. After washing with DMF, the resin was treated with a TFA solution containing 5percent water and 5percent TIS for 2 hours to remove the tHu protecting group in the side chain of the Glu residue. The resin was neutralized with 10percent DIEA in DMF and washed with DMF and DCM. The resin was then treated twice with hexylamine (2.0 mmol), DIC (2.0 mmol), HOHt (2.0 mmol) in 5 ml of DCM for two hours per treatment. The resin was washed with DMF and treated with 25percent piperidine in DMF for 30 minutes to remove the Fmoc protecting group. Afier washing with DMF and DCM, the resin was transferred into the reaction vessel on the AHI 430A peptide synthesizer for the assembly of the rest two residues. At the end of the assembly of the whole peptide chain, the resin was treated with a solution of 20percent mercaptoethanol/10percent DIEA in DMF for 2x30 mm to remove the DNP group on the His side chain. The N-terminal Hoc group was then removed by two treatments of 100percent TFA for 2 minutes. The peptide-resin was washed with DMF and DCM and dried under reduced pressure. The final cleavage was done by stirring the peptide-resin in 10 mE of HF containing 1 mE of anisole and dithiothreitol (50 mg) at 0° C. for 75 minutes. HF was removed by a flow of nitrogen. The residue was washed with ether (6x 10 mE) and extracted with 4N HOAc (6x10 mE). This crude product was purified on a reverse-phase preparative HPEC using a colunm (4x43 cm) of C18 DYNAMAX-100A°® (Varian, Walnut Creek, Calif., U.S.A.). The column was eluted with a linear gradient from 75percentAand25percent B to 55percentAand45percent B at flow rate of 10 mE/mm in an hour where A was 0.1percent TFA in water and B was 0.1percent TFA in acetonitrile. Fractions were collected and checked on an analytical HPEC. Those containing pure product were combined and lyophilized to dryness. 31.8 mg of a white solid was obtained. Purity was 89percent based on analytical HPEC analysis. Electro-spray ionization mass spectrometry (ESI MS) analysis gave the molecular weight at 3368.4 (in agreement with the calculated molecular weight of 3368.9).
  • 41
  • [ 4530-20-5 ]
  • [ 15761-39-4 ]
  • [ 13734-41-3 ]
  • [ 13139-15-6 ]
  • [ 15761-38-3 ]
  • [ 7536-58-5 ]
  • [ 13726-85-7 ]
  • [ 27144-18-9 ]
  • [ 13574-13-5 ]
  • [ 23680-31-1 ]
  • [ 54613-99-9 ]
  • [ 51077-16-8 ]
  • [ 47355-10-2 ]
  • [ 25024-53-7 ]
  • Boc-R(PG)-OH [ No CAS ]
  • C155H252N41O43PolS2 [ No CAS ]
  • 42
  • [ 4530-20-5 ]
  • [ 15761-39-4 ]
  • [ 13139-16-7 ]
  • [ 13139-15-6 ]
  • [ 15761-38-3 ]
  • [ 7536-58-5 ]
  • [ 15260-10-3 ]
  • [ 23680-31-1 ]
  • [ 61925-77-7 ]
  • [ 54613-99-9 ]
  • [ 47689-67-8 ]
  • [ 47355-10-2 ]
  • CGSISTYTLAKPADAKDSGSYWGC [ No CAS ]
 

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