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:
May. 15, 1984
Filed:
Apr. 14, 1982
Akio Sato, Ibaragi, JP;
Kenji Nakajima, Ibaragi, JP;
Yoshimasa Takahara, Narashino, JP;
Shizumasa Kijima, Niiza, JP;
Hideaki Watanabe, Kisogawamachi, JP;
Tamio Kawamura, Kakamigahara, JP;
Yasushi Nagai, Tokyo, JP;
Eisai Co., Ltd., Tokyo, JP;
General Director of the Agency of Industrial Science and Technology, Tokyo, JP;
Abstract
There are disclosed polyprenyl sulfone derivatives of the general formula: ##STR1## wherein n represents an integer of 1-4, R.sub.1 represents an aryl group d R.sub.2 represents a hydroxymethyl or carboxyl group. The polyprenyl sulfone derivatives are prepared by cultivating a microorganism of the genus Nocardia capable of oxidizing a compound of the general formula: ##STR2## wherein n and R.sub.1 have the same meanings as defined above, in a culture medium containing a compound of the above general formula (II), and then collecting the oxidation product from the culture mixture. The polyprenyl sulfone derivatives are useful as intermediates for preparing various useful polyprenyl compounds.