Ono Pharmaceutical Co., Ltd.

Kissei Pharmaceutical Co., Ltd.

Yoichi Iguchi

Masaki Hayashi

Masanori Kawamura

Yoshitaka Konishi

Hajimu Miyake

Tadao Tanouchi

Hirohisa Wakatsuka

Katsuichi Shimoji

Sadahiko Iguchi

Hisashi Suga

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

The imidazole derivatives of the general formula: ##STR1## wherein R.sup.1 represents a hydrogen atom, or a straight- or branched-chain alkyl group containing from 1 to 12 carbon atoms, R.sup.2 represents a hydrogen atom, or a straight- or branched-chain alkyl group containing from 1 to 4 carbon atoms, R.sup.3 represents a straight- or branched-chain alkyl group containing from 1 to 10 carbon atoms, and m and n, which may be the same or different, each represent zero, or an integer of 1 to 10, and non-toxic acid addition salts thereof, and, when R.sup.1 represents a hydrogen atom, non-toxic salts thereof, are new compounds. These compounds have a strong inhibitory effect on thromboxane synthetase from rabbit platelet microsomes, and are useful as therapeutically active agents for inflammation, hypertension, thrombus, cerebral apoplexy and asthma.

1-Substituted imidazole derivatives

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Takatsuki, Japan

Yoichi Iguchi