Enantioselective Synthesis of cis-3-Fluoropiperidin-4-ol, a Building Block for Medicinal Chemistry
摘要:
The first enantioselective route to both enantiomers of cis-1-Boc-3-fluoropiperidin-4-ol, a highly prized building block for medicinal chemistry, is reported. An enantioselective fluorination is employed, taking advantage of the methodology reported by MacMillan, which uses a modified cinchona alkaloid catalyst. In studying the fluorination reaction, we have shown that the catalyst can be replaced by commercially available primary amines, including α-methylbenzylamine, with similar levels of enantioselectivity. The piperidinols are readily crystallized to obtain enantiopure material.
The present invention relates to compounds of formula I:
in which n, R
1
, R
2
, R
3a
, R
4
and R
5
are defined in the Summary of the Invention; capable of inhibiting the activity of MEK. The invention further provides a process for the preparation of compounds of the invention, pharmaceutical preparations comprising such compounds and methods of using such compounds and compositions in the management of hyperproliferative diseases like cancer.
[EN] COMPOUNDS AND COMPOSITIONS AS INHIBITORS OF MEK<br/>[FR] COMPOSÉS ET COMPOSITIONS UTILES COMME INHIBITEURS DE MEK
申请人:NOVARTIS AG
公开号:WO2015022662A1
公开(公告)日:2015-02-19
The present invention relates to compounds of formula I in which n, R1, R2, R3a, R4 and R5 are defined in the Summary of the Invention; capable of inhibiting the activity of MEK. The invention further provides a process for the preparation of compounds of the invention, pharmaceutical preparations comprising such compounds and methods of using such compounds and compositions in the management of hyperproliferative diseases like cancer.
AMINOPYRIMIDINE COMPOUNDS AS INHIBITORS OF T790M CONTAINING EGFR MUTANTS
申请人:Bryan Marian C.
公开号:US20160016948A1
公开(公告)日:2016-01-21
This invention relates to novel compounds which are inhibitors of T790M containing EGFR mutants, to pharmaceutical compositions containing them, to processes for their preparation, and to their use in therapy for the prevention or treatment of cancer.