Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives
Patent
1989-09-15
1991-04-02
Griffin, Ronald W.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carbohydrates or derivatives
536 41, 536115, 514 25, 514532, 514533, 514544, C07H 1500, A61K 31715
Patent
active
050048333
ABSTRACT:
Disclosed are KS-501 derivatives represented by the formula (I) ##STR1## wherein X represents a hydrogen atom or COOR.sub.3, Y represents hydroxy or ##STR2## and R.sub.1, R.sub.2 and R.sub.3 are the same or different and represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, provided that when R.sub.1, R.sub.2 and R.sub.3 are simultaneously hydrogen atoms, and when R.sub.1, R.sub.2 and X are simultaneously hydrogen atoms, Y does not represent ##STR3## and a pharmaceutically acceptable acid addition salt thereof. The KS-501 derivatives have a platelet aggregation-inhibiting property, and are expected to be useful as antithrombotic agent.
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Kase Hiroshi
Murakata Chikara
Nakanishi Satoshi
Sano Hiroshi
Yamada Koji
Carson Nancy S.
Griffin Ronald W.
Kyowa Hakko Kogyo Co. Ltd.
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