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Oxathiolane compound and its preparation

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专利汇可以提供Oxathiolane compound and its preparation专利检索,专利查询,专利分析的服务。并且NEW MATERIAL:The oxathiolane compound of formulaI(A is phenyl, or phenyl, furyl or 3-methyl-5-isoxazolyl which may have halogen atom, lower alkyl, lower alkoxy, methylenedioxy, lower acyloxy or formyl group as substituent; R is H, lower alkyl, or phenyl).
EXAMPLE: 4-Bensylidene-2-methylene-1,3-oxathiolan-5-one.
USE: It has chymotrypsin-inhibiting activity, and is useful as a remedy for inflammation, agent for compounding with a peptide-type physiologically active substance such as insulin, preservative for fresh foods, and cancer-preventive.
PROCESS: The compound of formulaIis prepared by reacting the β-substituted-α- mercapto-propenoic acid of formula II with the acid anhydride of formula III at 50W200°C. The amount of the compound of formula III is preferably in excess of the compound of formula II.
COPYRIGHT: (C)1982,JPO&Japio,下面是Oxathiolane compound and its preparation专利的具体信息内容。

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