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:
Jul. 02, 1996
Filed:
May. 09, 1995
Masakatsu Kaneko, Hiromachi, JP;
Yoshinobu Murofushi, Hiromachi, JP;
Misako Kimura, Hiromachi, JP;
Mitsuo Yamazaki, Hiromachi, JP;
Yasuteru Iijima, Hiromachi, JP;
Sankyo Company, Limited, Tokyo, JP;
Abstract
A compound of the formula (I) is provided ##STR1## wherein A represents a group of the formula: ##STR2## R.sup.1 and R.sup.2 are independently hydrogen, halogen or a group of the formula --OR.sup.9 ; R.sup.9 is hydrogen, alkyl, alkylsulfonyl, haloalkylsulfonyl, arylsulfonyl or a hydroxy-protecting group; R.sup.3 and R.sup.4 are independently carbamoyl or carboxy; R.sup.5 and R.sup.6 both represent hydrogen or together represent an extra carbon-carbon bond between the carbon atoms to which they are attached; and W represents an alkoxy or aralkoxy; or a pharmaceutically acceptable salt or ester thereof. The compounds are useful as inhibitors of phosphodiesterases.