Pyrrolidine-containing peptides, JBIR-126, -148, and -149, from Streptomyces sp. NBRC 111228
摘要:
New pyrrolidine containing peptides JBIR-126 (1), JB1R-148 (2), and JBIR-149 (3) were isolated from a culture of Streptomyces sp. NBRC 111228 obtained from soil collected in the Okinawa Prefecture, Japan. The planar structures of 1, 2, and 3 were established based on 1D and 2D NMR, ESI-TOF-MS, IR, and UV spectra. The absolute configurations of amino acid residues were determined by Marfey's method. Compounds 1, 2, and 3 are structurally related to JBIR-34 and -35, in which an alanine residue is replaced by a unique pyrrolidine moiety. (C) 2015 Elsevier Ltd. All rights reserved.
Total Synthesis of Tambromycin by Combining Chemocatalytic and Biocatalytic C−H Functionalization
作者:Xiao Zhang、Emma King-Smith、Hans Renata
DOI:10.1002/anie.201801165
日期:2018.4.23
and several unusual structural features, including a densely substituted indole, a methyloxazoline ring, and an unusual pyrrolidine‐containing amino acid called tambroline. In this work, we identify a concise synthetic route to access tambromycin, which relies on the strategic use of biocatalytic and chemocatalytic C−H functionalization methods to prepare two key precursors to the natural product in