Heterocyclic syntheses with allene-1,3-dicarboxylic esters and acids : new chromene, chromone, quinolone, α-pyrone and coumarin syntheses
作者:Neil S. Nixon、Feodor Scheinmann、John L. Suschitzky
DOI:10.1016/s0040-4039(00)81474-4
日期:1983.1
Allene l,3-dicarboxylic esters and acids have been converted into chromenes, chromones, on a-pyrone and a coumarin by reactions with phenols and to quinolones by reaction with aniline derivatives. A novel chromene → coumarine rearrangement is also reported.
NIXON, N. S.;SCHEINMANN, F.;SUSCHITZKY, J. L., TETRAHEDRON LETT., 1983, 24, N 6, 597-600
作者:NIXON, N. S.、SCHEINMANN, F.、SUSCHITZKY, J. L.
DOI:——
日期:——
NIXON, N. S.;SCHEINMANN, F., J. CHEM. RES. SYNOP., 1984, N 12, 380-381
作者:NIXON, N. S.、SCHEINMANN, F.
DOI:——
日期:——
METHODS FOR PRODUCING CHIRAL CHROMONES, CHROMANES, AMINO SUBSTITUTED CHROMANES AND INTERMEDIATES THEREFOR
申请人:MILLENIUM PHARMACEUTICALS, INC.
公开号:EP1292589A2
公开(公告)日:2003-03-19
[EN] METHODS FOR PRODUCING CHIRAL CHROMONES, CHROMANES, AMINO SUBSTITUTED CHROMANES AND INTERMEDIATES THEREFOR<br/>[FR] PROCEDES DE PRODUCTION DE CHROMONES CHIRAUX, DE CHROMANES, ET DE CHROMANES AMINO SUBSTITUES ET LEURS INTERMEDIAIRES
申请人:LILLY CO ELI
公开号:WO2001094335A2
公开(公告)日:2001-12-13
Disclosed are process steps and novel processes for producing chromane compositions enriched in at least one (2R or 2S) enantiomer, preferably chroman-2-yl carboxylic acid compounds and chroman-2-yl carboxylic acid esters which are intermediates for producing platelet aggregation inhibitors and/or are themselves potent platelet aggregation inhibitors. Further disclosed are enzymatic processes for resolving chiral intermediates or final products to provide desired enantiomers.