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:
Feb. 22, 2005
Filed:
Feb. 10, 2003
Michael P. Fleming, Longmont, CO (US);
Yeun-kwei Han, Louisville, CO (US);
Lewis M. Hodges, Longmont, CO (US);
David A. Johnston, Louisville, CO (US);
Roger P. Micheli, Louisville, CO (US);
Kurt Puentener, Basel, CH;
Chris R. Roberts, Berthoud, CO (US);
Michelangelo Scalone, Birsfelden, CH;
Mark A. Schwindt, Boulder, CO (US);
Robert J. Topping, Longmont, CO (US);
Michael P. Fleming, Longmont, CO (US);
Yeun-Kwei Han, Louisville, CO (US);
Lewis M. Hodges, Longmont, CO (US);
David A. Johnston, Louisville, CO (US);
Roger P. Micheli, Louisville, CO (US);
Kurt Puentener, Basel, CH;
Chris R. Roberts, Berthoud, CO (US);
Michelangelo Scalone, Birsfelden, CH;
Mark A. Schwindt, Boulder, CO (US);
Robert J. Topping, Longmont, CO (US);
Roche Colorado Corporation, Boulder, CO (US);
Abstract
The present invention relates to a novel process for producing a δ-lactone of the formula:using an acyl halide of the formula:wherein R, RRand X are described herein, as well as novel intermediates. In particular, the present invention relates to a process for enantioselectively producing the (R)-δ-lactone.