摘要:
A novel acylation process using an alkali metal bromide and a dialkylaminopyridine to form a sterically hindered ester functionality from an alkanoyl chloride and an alcohol is disclosed.
摘要:
A novel hydrogenation process, using a homogenous iridium or rhodium catalyst for selectively adding hydrogen to the 3,5 positions in the polyhydronaphthyl ring of lovastatin, simvastatin or C-8-acyl or C-6-substituted analogs thereof, is disclosed.
摘要:
A novel hydrogenation process, using a homogenous iridium or rhodium catalyst for the reduction of both double bonds of des-(.alpha.-methylbutyryl)-C-8-hydroxy lovastatin and C-8-amino, C-8-alkoxy and C-6-substituted analogs, is disclosed.
摘要:
The bisulfate salt of N,N-dimethyl-2-�5-(1,2,4-triazol-1-ylmethyl)-1H-indol-3-yl!ethylamine is a selective agonist of 5-HT.sub.1 -like receptors and is useful in the treatment of migraine and associated disorders.
摘要:
.beta.- or .gamma.-Ketoesters and .beta.- or .gamma.-ketoamides are asymmetrically reduced with a Ru(II)-BINAP derived catalyst at about 40.degree. C. and about 50 N/mm.sup.2 of hydrogen in the presence of a strong acid.
摘要翻译:在强酸存在下,在约40℃和约50N / mm 2的氢气下使用Ru(II)-BINAP衍生的催化剂不对称地还原β-或γ-甲酯和β-酮酰胺。
摘要:
A process of synthesizing a compound of the formula 1: ##STR1## is disclosed, which comprises reacting a compound of the formula 2: ##STR2## with diphenylphosphine in the presence of an amine base and a nickel catalyst to produce a compound of formula 1.
摘要:
Allylic alkylation with retention of configuration of a substrate having an allylic carbon-oxygen bond by reaction with a nucleophile in the presence of a Pd.degree. with an excess of a phosphine.
摘要:
A process is disclosed that quantitatively bioconverts indene to (1S,2R)-indene oxide and (1S,2R)-indandiol, by the action of fungal haloperoxidase followed by various chemical step(s), e.g., adjusting the pH.
摘要:
A regeneratable polymer-supported Pd(O) catalytic deblocking process using a regeneratable polymer-supported Pd(O) catalyst in a biphasic system deblocks various allyl-protected ester, carbonates, carbamates and cinnamyl esters.
摘要:
A novel hydrogenation process, employing an iridium or rhodium catalyst, in an alcoholic solvent mixture, for the reduction of the 4a,5 double bond in the polyhydronaphthyl ring of des-(.alpha.-methylbutyryl)-8-hydroxy-lovastatin or analogs thereof, is disclosed.