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Journal of Chinese Pharmaceutical Sciences ›› 2017, Vol. 26 ›› Issue (9): 642-649.DOI: 10.5246/jcps.2017.09.072

• Original articles • Previous Articles     Next Articles

The glycosylation-oriented engineering of human vasopressin

Hongxing Li, Ning Yuan, Suwei Dong*   

  1. State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, China
  • Received:2017-06-07 Revised:2017-08-02 Online:2017-09-30 Published:2017-09-04
  • Contact: Tel.: +86-010-82805931, E-mail: dongs@bjmu.edu.cn
  • Supported by:

    Peking University Health Science Center (BMU20130354), State Key Laboratory of Natural and Biomimetic Drugs, and the National Recruitment Program of Global Youth Experts (1000 Plan).

Abstract:

A glycosylamino acid “cassette”-based synthetic route has been developed for the preparation of vasopressin analogues with glycosylation. This efficient protocol may be utilized in the synthesis of other novel cyclic glycopeptide structures and derivatives.

Key words: Vasopressin, Glycosylation, Cyclic glycopeptide

CLC Number: 

Supporting: 1. Peptide 19

 
 
 
Figure S1. HPLC trace and ESI-MS data of peptide 19. Linear gradient: 10%–30% solvent B over 30 min, Agilent C18 column, tR = 19 min; Calcd for C46H67N15O12S2: 1086.26 Da (average isotopes), [M+1H]+ m/z = 1087.26, [M+2H]2+ m/z = 544.13; observed [M+H]+ m/z = 1086.43, [M+2H]2+ m/z = 544.02.
 
 
2. Glycopeptide 20
 
 
 
Figure S2. HPLC trace and ESI-MS data of peptide 20. Linear gradient: 10%–30% solvent B over 30 min, Agilent C18 column, tR = 19.3 min; Calcd for C58H87N17O19S2: 1390.55 Da (average isotopes), [M+1H]+ m/z = 1391.55, [M+2H]2+ m/z = 696.28; observed: [M+1H]+ m/z = 1390.55, 1187.47*, [M+2H]2+ m/z = 696.20, 594.61*. *Signals denote the GlcNAc-cleaved species during ionization in mass spectrometry.
 
 
3. Glycopeptide 21
 
 
 
Figure S3. HPLC trace and ESI-MS data of peptide 21. Linear gradient: 10%–30% solvent B over 30 min, Agilent C18 column, tR = 17.9 min; Calcd for C54H80N16O17S2: 1289.45 Da (average isotopes), [M+1H]+ m/z = 1290.45, [M+2H]2+ m/z = 645.72; observed: [M+1H]+ m/z = 1289.55, [M+2H]2+ m/z = 645.52. #Peak denotes the oxidized species (3) after storage for several days.
 
 
4. Glycopeptide 22
 
 
 
Figure S4. HPLC trace and ESI-MS data of peptide 22. Linear gradient: 10%–30% solvent B over 30 min, Agilent C18 column, tR = 17.5 min; Calcd for C54H80N16O17S2: 1289.45 Da (average isotopes), [M+1H]+ m/z = 1290.45, [M+2H]2+ m/z = 645.72; observed: [M+1H]+ m/z = 1289.61, [M+2H]2+ m/z = 645.58.
 
 
5. Cyclopeptide 1
 
 
 
Figure S5. HPLC trace and ESI-MS data of peptide 1. Linear gradient: 10%–30% solvent B over 30 min, Agilent C18 column, tR = 19.2 min; Calcd for C46H65N15O12S2: 1084.24 Da (average isotopes), [M+1H]+ m/z = 1085.24, [M+2H]2+ m/z = 543.12; observed: [M+1H]+ m/z = 1084.41, [M+2H]2+ m/z = 543.08.
 
 
6. Glycopeptide 2
 
 
 
Figure S6. HPLC trace and ESI-MS data of peptide 2. Linear gradient: 10%–30% solvent B over 30 min, Agilent C18 column, tR = 18.7 min; Calcd for C58H85N17O19S2: 1388.54 Da (average isotopes), [M+1H]+ m/z = 1389.54, [M+2H]2+ m/z = 695.27; observed: m/z = 1388.69, 1185.59*, [M+2H]2+ m/z = 695.08, 593.51*. *Signals denote the GlcNAc-cleaved species during ionization in mass spectrometry.
 
 
7. Glycopeptide 3
 
 
 
Figure S7. HPLC trace and ESI-MS data of peptide 3. Linear gradient: 10%–30% solvent B over 30 min, Agilent C18 column, tR = 16.8 min; Calcd for C54H78N16O17S2: 1287.43 Da (average isotopes), [M+1H]+ m/z = 1288.43, [M+2H]2+ m/z = 644.72; observed: [M+1H]+ m/z = 1287.50, [M+2H]2+ m/z = 644.59.
 
 
8. Glycopeptide 4
 
 
 
Figure S8. HPLC trace and ESI-MS data of peptide 4. Linear gradient: 10%–30% solvent B over 30 min, Agilent C18 column, tR = 17.2 min; Calcd for C54H78N16O17S2: 1287.43 Da (average isotopes), [M+1H]+ m/z = 1288.43, [M+2H]2+ m/z = 644.72; observed: [M+1H]+ m/z = 1287.50, [M+2H]2+ m/z = 644.53.