Patent · US Expired

Process for the manufacture of a vitamin E intermediate

US6743615B2 · kind B2 · utility

0Cited by

1References

7Claims

0Family size

Assignee

Roche Vitamins Inc. · US

Inventors

Werner Bonrath · Kaiseraugst, CH
Detlef Eisenkraetzer · Penzberg, DE
Valerie Enjolras · Saint-Étienne, FR
Reinhard Karge · Staufen, DE
Thomas Netscher · Bad Krozingen, DE
Michael Schneider · Santa Monica, US

Key dates

Filing date	Feb 19, 2002
Grant date	Jun 1, 2004
Priority date	—
Expiry date	Feb 19, 2022

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC12P17/06
WIPO fieldBiotechnology
WIPO sectorChemistry

Abstract

The present invention is a process for converting trimethylhydroquinone diacetate (TMHQ-DA) into trimethylhydroquinone-1-monoacetate (TMHQ-1-MA) by contacting TMHQ-DA with a lipase to effect an enzymatic monosaponification of the TMHQ-DA. Also provided are methods of making (all-rac)-&agr;-tocopherol and (all-rac)-&agr;-tocopherol acetate.

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