THIAZOLIDINE DERIVATIVES AS OREXIN RECEPTOR ANTAGONISTS
申请人:Aissaoui Hamed
公开号:US20100113531A1
公开(公告)日:2010-05-06
The invention relates to novel thiazolidine derivatives of the formula (I) wherein A and R
1
are as described in the description and their use as medicaments, especially as orexin receptor antagonists.
AZETIDINE COMPOUNDS AS OREXIN RECEPTOR ANTAGONISTS
申请人:Aissaoui Hamed
公开号:US20100222600A1
公开(公告)日:2010-09-02
The invention relates to novel azetidine compounds of formula (I), wherein R
1
, R
2
, and X are as described in the description and their use as orexin receptor antagonists.
a generic, green synthesis of 17 valuable syn-aryl-(2S,3R)-2‑chloro-3‑hydroxy esters (syn-(2S,3R)-1) in 73%-99% isolated yields along with 6.1:1–83:1 dr and 31%∼>99% ee, through dynamicreductivekineticresolution of racemic aryl α‑chloro β-keto esters (2) catalyzed by an engineered ketoreductase which was obtained via epPCR-based directed evolution. The hectogram scale synthesis of syn-(2S,3R)-1b
Decarboxylative Claisen Condensations with Substituted Malonic Acid Half Oxyesters
作者:Marc Presset、Tania Xavier、Parvine Tran、Apolline Gautreau、Erwan Le Gall
DOI:10.1055/a-1950-5110
日期:2023.2
A decarboxylative Claisen condensation involving substituted malonicacid half oxyesters (SMAHOs) as pronucleophiles has been developed. The addition of their magnesium enolates to various acyl donors allows the synthesis of functionalized α-substituted β-keto esters in moderate to excellent yields (13–96%). In addition to acyl chlorides and acid anhydrides, these conditions proved efficient for the