Patent · US Expired

Preparation of hypericin

US5120412A · kind A · utility

9Cited by

2References

9Claims

0Family size

Assignee

YEDA RESEARCH AND DEVELOPMENT CO. LTD. · IL

Inventors

Yehuda Mazur · Nes Ziona, IL
Harald Bock · Berlin, DE
David Lavie · Rehovot, IL

Key dates

Filing date	Nov 9, 1990
Grant date	Jun 9, 1992
Priority date	—
Expiry date	Nov 9, 2010

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C46/02
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A process for preparing hypericin comprises oxidative dimerization of emodin anthrone and conversion of the intermediate protohypericin to hypericin by irradiation with visible light.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.