Process for producing isocoumarines and intermediates for the same

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United States of America Patent

PATENT NO 6426420
SERIAL NO

09610362

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Provided is a process for producing an isocoumarin-3-yl-acetic acid derivative, characterized by reacting a homophthalic acid derivative represented by a formula: ##STR1## (wherein R.sub.c, R.sub.2 and R are mainly protecting groups) with a malonic acid derivating represented by a formula: ##STR2## (wherein R is an organic group including a lower alkyl group; R.sub.3 is a protecting group for a carboxyl group; and X is a halogen atom or a --OM group (wherein M is alkaline metal or alkaline earth metal)). According to the above process, various isocoumarin-3-yl-acetic acid derivatives can efficiently be provided.

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Patent OwnerAddress
MERCIAN CORPORATIONCHUO-KU TOKYO 104-8305
ZAIDAN HOJIN BISEIBUTSU KAGAKU KENKYU KAI14-23 KAMI OHSAKI 3-CHOME SHINAGAWA-KU TOKYO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Isshiki, Kunio Zama, JP 16 24
Konuki, Kaname Yokohama, JP 5 9
Kuroda, Asako Kawasaki, JP 2 0
Nagai, Hazuki Fujisawa, JP 8 13
Nakashima, Takashi Fujisawa, JP 88 1294
Takeuchi, Tomio Tokyo, JP 164 840
Tsuchida, Toshio Yamato, JP 22 739
Yoshida, Masashi Chigasaki, JP 118 979

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