Aluminum alkyl-tertiary amine complex was found to induce the catalytic dimerization of methyl crotonate (MCr) to dimethyl 2-methylpent-4-ene-1,3-dicarboxylate (1) and dimethyl 2-methylpent-cis-3-ene-1,3-dicarboxylate (2). The of the γ-hydrogen of the MCr molecule. Dimer 2 is formed through the isomerization of dimer 1. The complex of AlR3 with a bidentate ligand, sparteine, produces dimer 1, selectively
QUINOLONE DERIVATIVE OR PHARMACEUTICALLY ACCEPTABLE SALT THEREOF
申请人:KOGA Yuji
公开号:US20120136025A1
公开(公告)日:2012-05-31
Disclosed are quinolone derivatives characterized in that these have lower alkyl, cycloalkyl or the like at the 1-position; —N(R
0
)C(O)-lower alkylene-CO
2
R
0
, lower alkylene-CO
2
R
0
, lower alkenylene-CO
2
R
0
, —O-lower alkylene-CO
2
R
0
, —O-(lower alkylene which may be substituted with —CO
2
R
0
)-aryl or —O-lower alkenylene-CO
2
R
0
(wherein R
0
is H or lower alkyl) at the 3-position; halogen at the 6-position; and amino group substituted with a substituent group having a ring structure at the 7-position, respectively, or pharmaceutically acceptable salts thereof, has excellent P2Y12 inhibitory activity. The quinolone derivatives have excellent platelet aggregation inhibitory activity. A method of using the compounds is also disclosed.
Crombie,L. et al., Journal of the Chemical Society. Perkin transactions I, 1975, p. 1090 - 1099
作者:Crombie,L. et al.
DOI:——
日期:——
——
作者:Donald W. Cameron、Ross M. Heisey
DOI:10.1071/ch00027
日期:——
Reaction of certain geometrically defined 1,1-dioxy-4-alkyl- and -4,4-dialkyl-substituted buta-1,3-dienes with halogenated quinones does not involve Diels-Alder or Michael addition chemistry. Instead, rapid competitive oxidation of the dienes to give 2,4-dienoate esters was observed. This new reaction involves strong spatial association between diene and quinone, hydrogen being transferred specifically from the (4E)-alkyl group. Its scope is compared with addition of the same terminally substituted dienes towards the reactive non-quinonoid dienophile tetracyanoethylene.