Ono Pharmaceutical Co., Ltd.

Hisashi Suga

Hajimu Miyake

Masaki Hayashi

Seiji Kori

Yoshitaka Konishi

Hirohisa Wakatsuka

Katsuichi Shimoji

Sadahiko Iguchi

Kimiichiro Matsumoto

Takashi Yamato

Yoichi Iguchi

Yasuyuki Miyata

Prostaglandin analogues of the general formula: ##STR1## [wherein the ring A represents: ##STR2## the ring B represents: ##STR3## (wherein R.sup.6 represents hydrogen, methyl or ethyl, and r is zero, one or two), Y represents ethylene, cis- or trans-vinylene or ethynylene, Z represents a grouping of the formula: --(CH.sub.2).sub.m --, --(CH.sub.2).sub.3 --CHR.sup.7 --, --(CH.sub.2).sub.2 --CHR.sup.7 --CH.sub.2 --, --CH.sub.2 --CHR.sup.7 --(CH.sub.2).sub.2 --, --CHR.sup.7 --(CH.sub.2).sub.3 --, or trans--(CH.sub.2).sub.2 --CH.dbd.CH-- (wherein m is 3, 4 or 5, and R.sup.7 represents methyl or ethyl), R.sup.1 represents a grouping of the formula: --COOR.sup.8, ##STR4## or --CH.sub.2 OR.sup.11 (wherein R.sup.8 represents hydrogen, alkyl, aralkyl, cycloalkyl which is unsubstituted or substituted by at least one alkyl group, or R.sup.8 represents phenyl which is unsubstituted or substituted by halogen, trifluoromethyl, alkyl, alkoxy, alkylthio or phenyl, or represents naphthyl, 2,3- or 1,3-dihydroxypropyl, 2,3- or 1,3-bisalkanoyloxypropyl, a grouping of the formula: -D.sub.1 --COOR.sup.12, ##STR5## -D.sub.2 -R.sup.15 or -D.sub.3 -R.sup.16, wherein D.sub.1 represents alkylene, D.sub.2 represents alkylene, D.sub.3 represents a single bond or alkylene, R.sup.12, R.sup.13 and R.sup.14, each represent alkyl, R.sup.15 represents hydroxy, alkoxy or alkylthio and R.sup.16 represents a heterocyclic ring, or R.sup.8 represents a grouping of the formula: ##STR6## R.sup.9 and R.sup.10, each represent hydrogen, alkyl, alkylsulphonyl, alkanoyl or ##STR7## represents a heterocyclic ring, and R.sup.11 represents hydrogen or alkanoyl, R.sup.2 represents hydrogen, methyl or ethyl, R.sup.3 represents a single bond or alkylene, R.sup.4 represents hydrogen, alkyl, alkoxy, cycloalkyl or cycloalkyloxy unsubstituted or substituted by alkyl, or represents phenyl or phenoxy unsubstituted or substituted by halogen, trifluoromethyl or alkyl with the proviso that, when R.sup.3 represents a single bond, R.sup.4 does not represent alkoxy, cycloalkyloxy or phenoxy, R.sup.5 represents hydrogen, methyl or ethyl and with the proviso that, when one of the groups R.sup.5, R.sup.6 and R.sup.7 represents methyl or ethyl the other two groups are hydrogen atoms] and cyclodextrin clathrates, non-toxic salts and non-toxic acid addition salts thereof, possess selective strong stimulatory activity on uterine contraction in female mammals.

Prostacyclin analogues

Prostaglandin analogues of the formula: ##STR1## [wherein R.sup.1 represents hydrogen or alkyl of 1 to 12 carbon atoms, R.sup.2 represents a single bond or alkylene of from 1 to 5 carbon atoms, R.sup.3 represents hydrogen, alkyl or alkoxy of 1 to 8 carbon atoms, cycloalkyl or cycloalkyloxy of 4 to 7 carbon atoms unsubstituted or substituted by alkyl of 1 to 8 carbon atoms, or phenyl or phenoxy unsubstituted or substituted by halogen, trifluoromethyl or alkyl of 1 to 4 carbon atoms, one of R.sup.4 and R.sup.5 represents hydrogen and the other represents hydroxy or R.sup.4 and R.sup.5 together represent oxo, R.sup.6 represents hydrogen or a hydroxy-protecting group which may be removed under acidic conditions, the double bond between the carbon atoms in positions 13 and 14 is trans, the wavy line  attached to the carbon atom in position 15 represents .alpha.- or .beta.- configuration or a mixture thereof and, when one of R.sup.4 and R.sup.5 represents hydrogen and the other represents hydroxy, the configuration of the carbon atom in position 3 is R-- or S or a mixture thereof, provided that, when R.sup.2 represents a single bond, R.sup.3 does not represent alkoxy, cycloalkyloxy or phenoxy and when R.sup.6 represents a hydrogen atom, cyclodextrin clathrates thereof and, when R.sup.1 represents a hydrogen atom, non-toxic salts thereof, possess selective prostaglandin-like properties.

3-Hydroxy and 3-oxo-prostaglandin analogues

15-Cycloalkyl-prostaglandins of the formula:- ##STR1## wherein A represents a grouping of the formula:- ##STR2## X represents ethylene of cis-vinylene, Y represents ethylene or trans-vinylene, B represents ethylene or trans-vinylene, R represents hydrogen or alkyl of 1 through 4 carbon atoms, R.sup.1 represents cycloalkyl of 4 through 7 carbon atoms, and R.sup.2 represents hydrogen or alkyl of 1 through 12 carbon atoms, are new compounds possessing the useful pharmacological properties typical of prostaglandins; they are of especial interest in the inhibition of blood platelet aggregation.

15-Cycloalkyl-prostaglandins

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Takatsuki, Japan

Hisashi Suga