Process for producing isocoumarines and intermediates for the same
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Jul 30, 2002
Grant Date -
N/A
app pub date -
Jul 5, 2000
filing date -
Jul 22, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
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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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
MERCIAN CORPORATION | CHUO-KU TOKYO 104-8305 | |
ZAIDAN HOJIN BISEIBUTSU KAGAKU KENKYU KAI | 14-23 KAMI OHSAKI 3-CHOME SHINAGAWA-KU TOKYO |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Isshiki, Kunio | Zama, JP | 16 | 24 |
# of filed Patents : 16 Total Citations : 24 | |||
Konuki, Kaname | Yokohama, JP | 5 | 9 |
# of filed Patents : 5 Total Citations : 9 | |||
Kuroda, Asako | Kawasaki, JP | 2 | 0 |
# of filed Patents : 2 Total Citations : 0 | |||
Nagai, Hazuki | Fujisawa, JP | 8 | 13 |
# of filed Patents : 8 Total Citations : 13 | |||
Nakashima, Takashi | Fujisawa, JP | 88 | 1294 |
# of filed Patents : 88 Total Citations : 1294 | |||
Takeuchi, Tomio | Tokyo, JP | 164 | 840 |
# of filed Patents : 164 Total Citations : 840 | |||
Tsuchida, Toshio | Yamato, JP | 22 | 739 |
# of filed Patents : 22 Total Citations : 739 | |||
Yoshida, Masashi | Chigasaki, JP | 118 | 979 |
# of filed Patents : 118 Total Citations : 979 |
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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