Total syntheses of (-)-nocardicins A-G: a biogenetic approach
作者:Gino M. Salituro、Craig A. Townsend
DOI:10.1021/ja00158a040
日期:1990.1
first time, having geometric and stereoisomeric purities of a high order. The syntheses proceed through the central intermediacy of tert-butyl (−)-3-aminocardicinate (14),which has been prepared in a biogenetically patterned, modified Mitsunobu cyclodehydration reaction of a protected L-seryl-D-(p-hydroxyphenyl)glycine dipeptide
SALITURO, GINO M.;TOWNSEND, CRAIG A., J. AMER. CHEM. SOC., 112,(1990) N, C. 760-770
作者:SALITURO, GINO M.、TOWNSEND, CRAIG A.
DOI:——
日期:——
Stereocontrolled Syntheses of Peptide Thioesters Containing Modified Seryl Residues as Probes of Antibiotic Biosynthesis
作者:Nicole M. Gaudelli、Craig A. Townsend
DOI:10.1021/jo4007893
日期:2013.7.5
exclusion of light from the P(OEt)3-mediated Mitsunobu ringclosure afforded yields of >95%, presumably owing to reduced photodegradation of the azodicarboxylate used. These sensitive potential substrates and products will be used in mechanistic studies of the two nonribosomal peptide synthetases NocA and NocB that lie at the heart of nocardicin biosynthesis, a family of monocyclic β-lactam antibiotics.