A process for the production of a compound of Formula I, or a pharmaceutically acceptable salt thereof, or a pharmaceutically acceptable prodrug ester thereof,
comprising cleaving a lactam of formula II
wherein the symbols are as defined, with a base; and precursors therefor and processes for the preparation of the precursors. The compounds of Formula I are pharmaceutically active compounds which are selective inhibitors of Cyclooxygenase II.
[EN] PROCESS FOR PHENYLACETIC ACID DERIVATIVES<br/>[FR] PROCEDES DE PRODUCTION DE PRODUITS DERIVES D'ACIDES PHENYLACETIQUES
申请人:NOVARTIS AG
公开号:WO2001023346A2
公开(公告)日:2001-04-05
A process for the production of a compound of formula (I), or a pharmaceutically acceptable salt thereof, or a pharmaceutically acceptable prodrug ester thereof, comprising cleaving a lactam of formula (II) wherein the symbols are as defined, with a base; and precursors therefor and processes for the preparation of the precursors. The compounds of formula (I) are pharmaceutically active compounds which are selective inhibitors of Cyclooxygenase (II).
A process for the production of a compound of Formula I, or a pharmaceutically acceptable salt thereof, or a pharmaceutically acceptable prodrug ester thereof,
comprising cleaving a lactam of formula II
wherein the symbols are as defined, with a base; and precursors therefor and processes for the preparation of the precursors. The compounds of Formula I are pharmaceutically active compounds which are selective inhibitors of Cyclooxygenase II.
Enantioselective Synthesis of <i>cis</i>‐Decalins by Merging the Birch Reduction and Inverse‐Electron‐Demand Diels–Alder Reaction
作者:Xu‐Ge Si、Shi‐Xiong Feng、Zhuo‐Yan Wang、Xiaoyu Chen、Meng‐Meng Xu、Yu‐Zhen Zhang、Jun‐Xiong He、Limin Yang、Quan Cai
DOI:10.1002/anie.202303876
日期:2023.8.7
Asymmetric synthesis of highly functionalized chiral cis-decalins was realized by merging Birchreduction and a tandem olefin migration/asymmetric IEDDA reaction. Up to six contiguous and two quaternary stereocenters could be formed in one step by efficient kinetic resolution. The synthetic value of the approach is illustrated by the concise total synthesis of (+)-occidentalol and the synthesis of