Title:
IMPROVEMENT OF ORGANIC COMPOUND
Document Type and Number:
Japanese Patent JPS51113864
Kind Code:
A
Abstract:
Procedure for preparing benzofuranone derivatives of formula I **(See formula)** wherein R1 is alkyl of 1 to 10 carbon atoms, cycloalkyl of 3 to 8 carbon atoms, or phenyl; R2 is hydrogen or lower alkyl, and is halogen, nitro, lower alkyl, methylthio, hydroxy, lower alkoxy, acyloxy or acylamino, provided that R2 cannot signify hydrogen when R3 is in the 5-position, and when R1 and R3 signify a linear alkyl chain of 1 to 5 carbon atoms, and are identical, characterized in that compounds of formula II are lactonized, **(See formula)** where R1, R2 and R3 have the previously indicated meanings. (Machine-translation by Google Translate, not legally binding)
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Inventors:
ANNEMARII KUROTSUSE
WARUTAA HEFURIGAA
DANIERU HAUZAA
WARUTAA HEFURIGAA
DANIERU HAUZAA
Application Number:
JP2565576A
Publication Date:
October 07, 1976
Filing Date:
March 11, 1976
Export Citation:
Assignee:
SANDOZ AG
International Classes:
C07C205/56; C07D307/83; (IPC1-7): A61K31/34; C07D307/83