Absolute Configuration and Total Synthesis of a Novel Antimalarial Lipopeptide by the de Novo Preparation of Chiral Nonproteinogenic Amino Acids
作者:Shibaji K. Ghosh、Brinda Somanadhan、Kevin S.-W. Tan、Mark S. Butler、Martin J. Lear
DOI:10.1021/ol300293a
日期:2012.3.16
Marfey’s derivatization studies) and the total synthesis of a novel antimalarial lipid-peptide isolated from Streptomyces sp. (IC50 = 0.8 μM, Plasmodium falciparum 3D7) is disclosed. To this end, versatile stereocontrolled routes to nonproteinogenicaminoacids (via catalytic Mannich, Sharpless methods) and enantiomeric trans fatty acids (via Evans alkylation, Kocienski–Julia olefination) have been
Provided herein are antibacterial compounds, wherein the compounds in some embodiments have broad spectrum bioactivity. In various embodiments, the compounds act by inhibition of lipoprotein signal peptidase II (LspA), a key protein in bacteria. Pharmaceutical compositions and methods for treatment using the compounds described herein are also provided.
On the absolute stereochemistry of (−)-4-alkylnonan-2-ones
作者:Victor Garcia-Ruiz、Simon Woodward
DOI:10.1016/s0957-4166(02)00574-8
日期:2002.10
The alcohols (S)-(C5H11CH)-C-n(R)CH2OH (R = Me, Et) have been prepared by Evans' alkylation chemistry (>98% e.e.). For R = Me [alpha](D) = -15.5 (c 0.31, MeOH); for R = Et [alpha](D) = +6.8 (c 0.31, MeOH). Equivalent alcohols are obtained by Baeyer-Villiger oxidative cleavage of (S)-(-)-(C5H11CH)-C-n(R)CH2COMe (R = Me, 85% e.e.; R = Et, 62% e.e.) derived from catalytic asymmetric conjugate addition. Thus, AlMe3 or ZnEt2 addition to the Si face of the enone generates a (-) antipode with a 4S stereocentre. (C) 2002 Elsevier Science Ltd. All rights reserved.
CYCLIC PEPTIDE ANTIBIOTICS
申请人:Genentech, Inc.
公开号:US20200331968A1
公开(公告)日:2020-10-22
Provided herein are antibacterial compounds, wherein the compounds in some embodiments have broad spectrum bioactivity. In various embodiments, the compounds act by inhibition of lipoprotein signal peptidase II (LspA), a key protein in bacteria. Pharmaceutical compositions and methods for treatment using the compounds described herein are also provided.