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. 09, 1982
Filed:
Mar. 20, 1980
Toshio Atsumi, Ashiya, JP;
Yoshiaki Takebayashi, Toyonaka, JP;
Masaru Fukui, Takarazuka, JP;
Hisao Yamamoto, Kobe, JP;
Sumitomo Chemical Co., Ltd., Osaka, JP;
Kao Soap Co., Ltd., Tokyo, JP;
Abstract
A new class of 4-homoisotwistane derivatives of the formula, ##STR1## wherein R.sub.1 is a hydrogen atom or a C.sub.1 -C.sub.3 alkyl group, and R.sub.2 is an alkyl group, a phenyl group which may be either unsubstituted or substituted with a C.sub.1 -C.sub.3 alkyl, C.sub.1 -C.sub.3 alkoxy, nitro group or a halogen atom (hereinafter referred to as 'an optionally substituted phenyl group'), a group of the formula, --A--OH in which A is a C.sub.1 -C.sub.3 alkylene group; a group of the formula, --A--B in which A is as defined as above and B is a halogen atom, or a group of the formula, ##STR2## in which A is as defined above and R.sub.3 and R.sub.4 are independently a hydrogen atom or a C.sub.1 -C.sub.3 alkyl group or R.sub.3 and R.sub.4 may, when taken together with the adjacent nitrogen atom to which R.sub.3 and R.sub.4 are linked, form pyrrolidine, piperidine, morpholine, phthalimide or piperazine, which have been found to possess potent antiviral activity, are prepared, for example by reacting a compound of the formula, ##STR3## wherein R.sub.1 is as defined above and X is halogen, with a compound of the formula,