An Effective System to Synthesize Hypolipidemic Active α-Asarone and Related Methoxylated (<i>E</i>)-Arylalkenes
作者:Anuj Sharma、Bhupendra P. Joshi、Arun K. Sinha
DOI:10.1246/bcsj.77.2231
日期:2004.12
Methoxylated (E)-arylalkenes (1a–1k) were prepared in two steps by an improved Grignard reaction comprising the reverse addition of alkylmagnesium bromide to benzaldehydes (2a–2k) in anhydrous ether and toluene into arylalkanols (3a–3k) in high yield, followed by dehydration with silica gel under microwave irradiation for 3–12 min, depending upon the substituents attached to the aromatic ring to afford hypolipidemic active α-asarone (1a) and related methoxylated (E)-arylalkenes (1b–1k).
Aromatic amides as potentiators of bioefficacy of anti-infective drugs
申请人:Koul Surrinder
公开号:US20070004645A1
公开(公告)日:2007-01-04
The present invention relates to an aromatic substituted pentadienoic acid amides and there use in combination of specific amounts of aromatic amides i.e. 4-alkyl-5-(substituted phenyl)-2(E),4(E)-pentadienoic acid amides, its geometrical isomers or their dihydro or tetrahydro derivatives and an anti-infective drug useful in potentiating the bioefficacy of antiinfective drug. The combination of the present invention is useful in the treatment of certain infections and disease at lower concentration of anti-infectives necessary to inhibit the growth of microbial strains and may also find applications in reducing the resistance in microorganisms.
Studies on Dimethoxyphenylaminoalcohols. II. Syntheses and Relative Configulations of 1-Dimethoxyphenyl-3-(alkylamino) butanols
作者:HIROAKI HAMANO、SHIGENOBU OKUDA
DOI:10.1248/cpb.22.1348
日期:——
1-Dimethoxyphenyl-3-(alkylamino) butanols were synthesized by the reduction of the corresponding β-aminoketones. 1-Dimethoxyphenyl-3-aminobutanols were synthesized via the hydrogenolyses of the corresponding N-benzyl derivatives. Diastereomers were respectively isolated and their relative configurations were determined by extensive nuclear magnetic resonance studies.
AROMATIC AMIDES AS POTENTIATORS OF BIOEFFICACY OF ANTI-INFECTIVE DRUGS
申请人:Council Of Scientific and Industrial Research
公开号:US20140073595A1
公开(公告)日:2014-03-13
The present invention relates to an aromatic substituted pentadienoic acid amides and there use in combination of specific amounts of aromatic amides i.e. 4-alkyl-5-(substituted phenyl)-2(E),4(E)-pentadienoic acid amides, its geometrical isomers or their dihydro or tetrahydro derivatives and an anti-infective drug useful in potentiating the bioefficacy of antiinfective drug. The combination of the present invention is useful in the treatment of certain infections and disease at lower concentration of anti-infectives necessary to inhibit the growth of microbial strains and may also find applications in reducing the resistance in microorganisms.
PROCESS FOR PREPARATING OPTICALLY ACTIVE COMPOUNDS
申请人:Japan Science and Technology Corporation
公开号:EP0916637A1
公开(公告)日:1999-05-19
The present invention relates to a novel, highly practical method for producing optically active compounds such as optically active alcohol and optically active amine useful for various utilities such as synthetic intermediates of drugs, liquid crystal materials, and optical resolution agents, comprising hydrogen transfer-type asymmetric reduction in the presence of a transition metal catalyst and an optically active nitrogen-containing compound or a transition metal catalyst with an optically active nitrogen-containing compound as the asymmetric ligand, and a hydrogen-donating organic or inorganic compound.
In accordance with the present invention, characteristically, an optically active secondary alcohol can be recovered through the hydrogen transfer-type oxidation from racemic secondary alcohol or meso-type diol.