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:
Nov. 29, 2005
Filed:
Sep. 12, 2003
Arun Kumar Sinha, Himachal Pradesh, IN;
Bhupendra Prasad Joshi, Himachal Pradesh, IN;
Ruchi Acharya, Himachal Pradesh, IN;
Arun Kumar Sinha, Himachal Pradesh, IN;
Bhupendra Prasad Joshi, Himachal Pradesh, IN;
Ruchi Acharya, Himachal Pradesh, IN;
Council of Scientific & Industrial Research, New Delhi, IN;
Abstract
The present invention relates to neolignan (NEOLASA-I) 3-ethyl-2-methyl-3-(2″,4″,5″-trimethoxy-phenyl-1-(2',4′,5′-trimethoxy)phenyl-1-propene and a process for the preparation of high purity, higher yield neolignan, α-asarone, 2,4,5-trimethoxy-phenyl propionone from β-asarone or β-asarone richoil containing α and γ-asarone by hydrogenating and dimerizing by treatment with DDQ in presence of an organic acid.