Solution-Phase Peptide Synthesis; Synthesis of 'North-Western' and 'South-Eastern' Fragments of the Antifungal Cyclodepsipeptide Petriellin A
作者:Luigi Aurelio、Robert T. C. Brownlee、Andrew B. Hughes
DOI:10.1071/ch08132
日期:——
The solution-phase synthesis of two highly modified peptides, a hexamer and a heptamer, that constitute the two halves of the antifungal cyclic depsipeptide, Petriellin A, is reported.
本报告介绍了两种高度修饰的肽的溶液相合成过程,一种是六聚体,另一种是七聚体,它们构成了抗真菌环脱肽 Petriellin A 的两半。
Total Synthesis and Structural Revision of the Presumed Aeruginosins 205A and B
作者:Stephen Hanessian、Xiaotian Wang、Karolina Ersmark、Juan R. Del Valle、Ellen Klegraf
DOI:10.1021/ol901702k
日期:2009.9.17
A stereoselective synthesis of enantiopure aeruginosin 205B aglycon confirms the presence of a (3R,2S)-3-chloroleucine amide residue and a (6R)-hydroxy (4aR,7aS)-octahydroindole-(2S)-2-carboxamide (Choi) subunit instead of a 6-chloro-substituted core (Ccoi). Enzyme inhibitory tests against thrombin revealed an IC50 of 0.31 μM. The totalsynthesis of the presumed aeruginosin 205B shows that the α-d-xylopyranosyl
A diastereoselectivesynthesis of β-Lactams 5a-e and 6a-e has been achieved, via a Staudinger reaction using imines derived from (1S)-(+)-camphor-10-sulfonamide, in good yields. The major diastereomers 6a-e were isolated in pure form by crystallization. The absolute configuration of the β-lactam 6b was established as 3R and 4S by X-ray analysis. The major diastereomers 6b and 6c were converted into
A highly stereoselective entry to α-hydroxy carboxylic acids using d-fructose diacetonide as a chiral auxiliary
作者:Hongwu Yu、C.Eric Ballard、Binghe Wang
DOI:10.1016/s0040-4039(01)00043-0
日期:2001.3
Protected α-hydroxy carboxylicacids were synthesized in moderate yield and high diastereoselectivity by alkylation of glycolate ester enolates using a d-fructose-derived chiral auxiliary. The new chiral center was assigned the (R)-configuration based upon comparisons to the literature. Both enantiomers of the auxiliary are readily available.
The invention provides compounds which are useful as inhibitors of metalloproteases, and which are effective in treating conditions characterized by excess activity of these enzymes. In particular, the present invention relates to a compound having a structure according to Formula (I).
1
Also disclosed are compounds, pharmaceutical compositions and methods of treating diseases characterized by metalloprotease activity using these compounds or the pharmaceutical compositions containing them.