Highly Enantioselective Claisen Rearrangement of Imidates Derived from Primary Allyl Alcohols
作者:Peter Metz、Benno Hungerhoff
DOI:10.1021/jo970123a
日期:1997.6.1
A highly enantioselective and diastereoselective Claisen rearrangement of N-arylimidates derivedfrom an axially chiral binaphthylamine auxiliary is reported. Upon deprotonation of the imidates with lithium diethylamide, the resultant azaenolates rearrange at 0 degrees C to give anti alpha,beta-disubstituted, gamma,delta-unsaturated N-binaphthyl amides. A iodolactonization/zinc reduction sequence readily
(+)-Trienomycins A, B, C, and F and (+)-Mycotrienins I and II: Relative and Absolute Stereochemistry
作者:Amos B. Smith、John L. Wood、Weichyun Wong、Alexandra E. Gould、Carmelo J. Rizzo、Joseph Barbosa、Kanki Komiyama、Satoshi Ōmura
DOI:10.1021/ja961400i
日期:1996.1.1
The complete relative and absolute stereochemistries have been elucidated for the ansamycin antibiotics (+)-trienomycins A, B, and C and their potent antifungal congeners, the (+)-mycotrienins I and II. A new species, (+)-trienomycin F, has also been isolated and characterized. In addition, an end-game synthetic strategy for the trienomycins and mycotrienins has been developed.
安沙霉素抗生素 (+)-三烯霉素 A、B 和 C 及其有效的抗真菌同源物 (+)-霉菌三烯素 I 和 II 的完整相对和绝对立体化学已经阐明。一个新物种,(+)-trienomycin F,也已被分离和表征。此外,还开发了三烯霉素和霉菌三烯素的最终合成策略。
3-Descladinosyl-6-O-carbamoyl and 6-O-carbonoyl macrolide antibacterial agents
申请人:——
公开号:US20040018994A1
公开(公告)日:2004-01-29
3-Descladinosyl-6-O-carbamoyl and 6-O-carbonoyl macrolide antibacterial agents of the formula:
1
wherein R
1
, W, R
3
, R
4
, R
5
, R
6
, X, X′, and Z are as described herein and in which the substituents have the meaning indicated in the description. These compounds are useful as antibacterial agents.
Remote Asymmetric Induction in an Intramolecular Ionic Diels−Alder Reaction: Application to the Total Synthesis of (+)-Dihydrocompactin
作者:Tarek Sammakia、Deidre M. Johns、Ganghyeok Kim、Martin A. Berliner
DOI:10.1021/ja043506g
日期:2005.5.1
The total synthesis of (+)-dihydrocompactin via an intramolecular ionic Diels-Alder reaction that proceeds with remote stereocontrol is described. This reaction proceeds by an intermediate vinyl-oxocarbenium ion (6), the conformational constraints of which lead to the observed asymmetricinduction. The sense of asymmetricinduction appears contrasteric and is explained by the proposed reactive conformation
[EN] INHIBITORS OF INDOLEAMINE 2,3-DIOXYGENASE AND/OR TRYPTOPHAN 2,3-DIOXYGENASE<br/>[FR] INHIBTEURS DE L'INDOLÉAMINE 2,3-DIOXYGÉNASE ET/OU DU TRYPTOPHANE DIOXYGÉNASE
申请人:IDORSIA PHARMACEUTICALS LTD
公开号:WO2019034725A1
公开(公告)日:2019-02-21
The present invention relates to compounds of Formula (I) inhibiting indoleamine 2,3-dioxygenase (IDO) and/or tryptophan 2,3-dioxygenase (TDO) enzymes. Further, their synthesis and their use as medicaments in inter alia cancer is disclosed.