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:
Aug. 27, 1985
Filed:
Sep. 22, 1983
Akihide Kooda, Gifu, JP;
Itsuo Nishioka, Fukuoka, JP;
Takeshi Nishiyori, Gifu, JP;
Shoji Yahara, Fukuoka, JP;
Kabushiki Kaisha Tsumurajuntendo, Tokyo, JP;
Abstract
New hydroxybiphenyl compounds of the general formula: ##STR1## wherein R.sub.1 stands for a hydrogen atom or a hydroxyl group, R.sub.2 for a hydrogen atom or a hydroxyl group, R.sub.3 for a hydroxyl group, a group of the formula -CH.sub.2 -CH.dbd.CH.sub.2 or a group of the formula -CH.dbd.CH-CHO, R.sub.4 for a hydrogen atom or a group of the formula ##STR2## and R.sub.5 for a hydroxyl group or a group of the formula ##STR3## These compounds are obtained by extraction of 'Tokoboku', i.e. dried cortex of Magnolia officinalis which belongs to the family Magnoliaceae. They are useful as pharmaceuticals or intermediates therefor, in particular as anti-allergics.