[EN] 6 SUBSTITUTED 2-HETEROCYCLYLAMINO PYRAZINE COMPOUNDS AS CHK-1 INHIBITORS<br/>[FR] COMPOSÉS 2-HÉTÉROCYCLYLAMINO PYRAZINES SUBSTITUÉES EN POSITION 6 EN TANT QU'INHIBITEURS DE CHK-1
申请人:PFIZER
公开号:WO2010016005A1
公开(公告)日:2010-02-11
The present invention is directed to compounds of formula (I), and pharmaceutically acceptable salts thereof, their synthesis, and their use as CHK-1 inhibitors.
Diastereoselective addition of chiral imines and 1,3-oxazolidines with Grignard reagents; Asymmetric synthesis of (R)-2-aryl- and (R,R)-2,5-bis(aryl)pyrrolidines
Asymmetric syntheses of (R)-2-aryl- and (R,R)-2,5-bis(aryl)pyrrolidines were described starting from chiral aromatic imines derived from (R)-phenylglycinol, in which the diastereoselective additions of Grignardreagents to the chiral imines and 1,3-oxazolidines were used as the key reaction step.
Chiral aldimines derived from phenylglycinol were diastereoselectively allylated with indium powder/allyl bromide in alcoholic solvents. Both aliphatic and aromatic aldimines provided good yield of the desired products with high diastereoselectivity. A racemization-free protocol for removal of the phenylglycinol auxiliary was also developed. The stereochemical assignment of the homoallylic amine was
6 SUBSTITUTED 2- HETEROCYCLYLAMINO PYRAZINE COMPOUNDS AS CHK-1 INHIBITORS
申请人:Braganza John Frederick
公开号:US20110144084A1
公开(公告)日:2011-06-16
The present invention is directed to compounds of formula (I),
and pharmaceutically acceptable salts thereof, their synthesis, and their use as CHK-1 inhibitors.
6 substituted 2-heterocyclylamino pyrazine compounds as CHK-1 inhibitors
申请人:Braganza John Frederick
公开号:US08518952B2
公开(公告)日:2013-08-27
The present invention is directed to compounds of formula (I),
and pharmaceutically acceptable salts thereof, their synthesis, and their use as CHK-1 inhibitors.