1,3-dithiol-2-ylidene derivatives and process for the preparation thereof
申请人:Yuhan Corporation, Ltd.
公开号:US05158950A1
公开(公告)日:1992-10-27
2-(1,3-Dithiol-2-ylidene)-2-[N-(substituted) carbamoly] acetate esters and salts thereof, having potent therapeutic or prophylactic effect for hepatic disorder, are provided. Processes for their preparation and intermediates in their preparation also are disclosed.
Disclosed are dithiolylidene acetamide derivatives represented by the following formula: ##STR1## wherein R.sup.1 and R.sup.2 may be the same or different and each independently represent a hydrogen atom or an alkyl group, or salts thereof; and pharmaceuticals containing them as effective ingredients. The dithiolylidene acetamide derivatives and their salts show AGE formation inhibitory action and are useful as preventives and therapeutics for diabetic complications.
Process for producing 1,3-dithiol-2-ylidene malonates
申请人:NIHON NOHYAKU CO., LTD.
公开号:EP0062118A1
公开(公告)日:1982-10-13
Preparation of a 1,3-dithiol-2-ylidene malonic-acid dialkyl ester for use as an agricultural or horticultural fungicide and as a therapeutic agent for treating hepatic diseases by a process comprising reacting a dialkyloxycarbonylketene dimercaptide with a trihalogenethane in the presence of a base, according to the formula:
in which
M = alkali metal or ammonium
Y= halogen
Z=halogen or hydrogen
R and R'= lower alkyl.