The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 15, 1977
Filed:
Apr. 03, 1974
Kiyoshi Sakai, Tokyo, JA;
Osamu Oda, Tokyo, JA;
Takashi Yusa, Tokyo, JA;
Mitsuo Yamazaki, Tokyo, JA;
Masaaki Sasaki, Tokyo, JA;
Kazuhiko Sasagawa, Tokyo, JA;
Sankyo Company Limited, Tokyo, JA;
Abstract
Prostanoic acid derivatives having the formula ##STR1## wherein A represents a straight or branched alkylene group having from one to 5 carbon atoms, R.sup.1 represents a straight or branched alkyl group having from 4 to 10 carbon atoms and R.sup.2 represents hydrogen atom or a straight or branched alkyl group having from one to 6 carbon atoms and pharmaceutically acceptable salts thereof. The compounds are useful as oxytocic agents and agents inhibiting the secretion of gastric acid and may be prepared by oxidizing a compound having the formula ##STR2## wherein A, R.sup.1 and R.sup.2 are the same as above, R.sup.3 and R.sup.4 are the same or different and each represents a protecting group for the hydroxyl group to give a compound having the formula ##STR3## wherein A, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are the same as above, removing the hydroxyl-protecting group from the latter compound and, if appropriate, salifying the product thus obtained.