摘要:
An intermediate in the synthesis of indinavir is prepared by iodohydroxylating an allyl acetonide by hypoiodous acid generated in situ from sodium hypochlorite and sodium iodide. ##STR1##
摘要:
Intermediates of structural formula ##STR1## can be made by reacting a primary or secondary amine with glycosidol or an activated derivative thereof. The process and intermediates are useful for synthesizing HIV protease inhibitor compounds.
摘要:
A process for making a clinically efficacious HIV protease inhibitor Compound J eliminates one step in its synthesis, by an improved, alternative synthesis of the 2(S)-4-picolyl-2-piperazine-t-butyl-carboxamide intermediate.
摘要:
A process for the production of 2-alkyl-3-aroyl-5-nitrobenzofurans by acylation of 2-(2-hydroxy-5-nitrophenyl)-1-aryl-ethanones and subsequent treatment of the esters with combinations of bases and proton acids or Lewis acids. This process can be used for the production of Dronedarone. Furthermore, novel intermediates for the manufacture of Dronedarone are provided.
摘要:
A process for the production of Dronedarone intermediates of the formula (I), by acylation of 2-(2-hydroxy-5-nitrophenyl)-1-(4-methoxyphenyl)-ethanone, subsequent treatment of the ester with bases and a zeolite (alumosilicate) catalyst and optional subsequent demethylation. This process can be used for the production of Dronedarone.
摘要:
The present invention relates to a process for the preparation of a compound of the formula I, which comprises reacting a compound of the formula IV with an oxalic acid diester and to novel intermediate compounds used therein.
摘要:
The present invention is aimed at a process for the preparation of enantiomerically enriched compounds of general formula (I). These are obtained by classical resolution of the corresponding acid using a chiral amino base in organic solvents.
摘要:
The present invention is concerned with a process for preparing compounds of the general formula (I). These compounds can preferably be used to prepare bioactive agents. The reaction of the invention starts from the corresponding hydroxy compounds which are oxidized, with Ru catalysis, in a one-phase aqueous system.
摘要:
The present invention relates to a process for the preparation of compounds of the general formula (I) by catalytic enantioselective hydrogenation of the corresponding ketones. There are used inter alia ruthenium catalysts with chiral diamines and chiral biphosphines as ligands.