Biomimetic studies on the mechanism of stereoselective lanthionine formationElectronic supplementary information (ESI) available: separation of the diastereomers of 5; cleavage of peptides from resins; COSY NMR spectrum of the product obtained from cyclization of both E-1 and 19. See http://www.rsc.org/suppdata/ob/b3/b304945k/
作者:Yantao Zhu、Matt D. Gieselman、Hao Zhou、Olga Averin、Wilfred A. van der Donk
DOI:10.1039/b304945k
日期:——
Selenocysteine derivatives are useful precursors for the synthesis of peptide conjugates and selenopeptides. Several diastereomers of Fmoc-3-methyl-Se-phenylselenocysteine (FmocMeSec(Ph)) were prepared and used in solidphase peptide synthesis (SPPS). Once incorporated into peptides, the phenylselenide functionality provides a useful handle for the site and stereospecific introduction of E- or Z-dehydrobutyrine
Biomimetic Stereoselective Formation of Methyllanthionine
作者:Hao Zhou、Wilfred A. van der Donk
DOI:10.1021/ol025629g
日期:2002.4.1
(Dhb)-containing peptides. Biomimeticcyclization via Michael addition of Cys to a Dhb yielded the B-ring of the lantibiotic subtilin as a single diastereomer. The methyllanthionine product was shown to have the natural configuration by preparation of the authentic stereoisomer. The formation of a single isomer suggests that the prepeptide has a strong intrinsic preference for the stereochemistry observed in lantibiotics