Studies on lactams. Part 65. N-Unsubstituted .beta.-lactams from .beta.-hydroxy-.alpha.-amino acids. Facile preparation of intermediates for isocephalosporins
Synthesis of δ-(l-α-aminoadipoyl)-l-cysteinyl-d-(O-methyl)-d-allothreonine a substrate for isopenicillin-N synthase and its O-methyl-d-threonine epimer
摘要:
The paper describes the synthesis of two epimeric tripeptides delta-(L-alpha-aminoadipoyl)-L-cysteinyl-D-(O-methyl)-D-threonine (13) and 6-(L-alpha-aminoadipoyl)-L-cysteinyl-D-(O-methyl)-D-allothreonine (14), modified substrates for the isopenicillin-N synthase enzyme. The D-allothreonine tripeptide (14)has been shown to be an excellent substrate for the enzyme whereas the D-threonine epimer did not react at all. The compound formed by the enzyme with the D-allothreonine tripeptide is a new 2-alpha-methoxypenicillin. (C) 1998 Published by Elsevier Science Ltd. All rights reserved.
Synthetic studies on the basic glycopeptide structure of c-mycosides
作者:M.K. Gurjar、U.K. Saha
DOI:10.1016/0040-4039(91)80238-2
日期:1991.11
The first synthetic approach towards D-Phe-D--Thr-D-Ala-L-Alanilol--(3,4-di--Me-Rhap), the glycolipid of C-mycoside is described.
朝向第一合成方法d -Phe- d - -Thr- d -Ala-大号-Alanilol- - (3,4-二- -Me-Rhap),C-mycoside的糖脂进行说明。
GACEL, G.;ZAJAC, J. M.;DELAY-GOYET, P.;DAUGE, V.;ROQUES, B. P., J. MED. CHEM., 31,(1988) N 2, 374-383
作者:GACEL, G.、ZAJAC, J. M.、DELAY-GOYET, P.、DAUGE, V.、ROQUES, B. P.
DOI:——
日期:——
Synthesis of δ-(l-α-aminoadipoyl)-l-cysteinyl-d-(O-methyl)-d-allothreonine a substrate for isopenicillin-N synthase and its O-methyl-d-threonine epimer
作者:Sigthór Pétursson、Jack E Baldwin
DOI:10.1016/s0040-4020(98)00280-4
日期:1998.5
The paper describes the synthesis of two epimeric tripeptides delta-(L-alpha-aminoadipoyl)-L-cysteinyl-D-(O-methyl)-D-threonine (13) and 6-(L-alpha-aminoadipoyl)-L-cysteinyl-D-(O-methyl)-D-allothreonine (14), modified substrates for the isopenicillin-N synthase enzyme. The D-allothreonine tripeptide (14)has been shown to be an excellent substrate for the enzyme whereas the D-threonine epimer did not react at all. The compound formed by the enzyme with the D-allothreonine tripeptide is a new 2-alpha-methoxypenicillin. (C) 1998 Published by Elsevier Science Ltd. All rights reserved.
Studies on lactams. Part 65. N-Unsubstituted .beta.-lactams from .beta.-hydroxy-.alpha.-amino acids. Facile preparation of intermediates for isocephalosporins
作者:Ajay K. Bose、M. S. Manhas、J. E. Vincent、K. Gala、I. F. Fernandez