PRODUCTION METHOD OF (2E,6Z,8E)-N-ISOBUTYL-2,6,8-DECATRIENAMIDE (SPILANTHOL), AND FOOD OR DRINK, FRAGRANCE OR COSMETIC, OR PHARMACEUTICAL COMPRISING THE SAME
申请人:Tanaka Shigeru
公开号:US20110105773A1
公开(公告)日:2011-05-05
A problem as an object of the invention is to provide a production method of spilanthol in a large scale without using expensive reagents. The present invention provides a production method of N-isobutyl-2,6,8-decatrienamide, wherein a column chromatography purification step is not required in all processes.
Production method of (2E,6Z,8E)-N-isobutyl-2,6,8-decatrienamide (spilanthol), and food or drink, fragrance or cosmetic, or pharmaceutical comprising the same
申请人:Takasago International Corporation
公开号:US08217192B2
公开(公告)日:2012-07-10
A problem as an object of the invention is to provide a production method of spilanthol in a large scale without using expensive reagents. The present invention provides a production method of N-isobutyl-2,6,8-decatrienamide, wherein a column chromatography purification step is not required in all processes.
METHOD FOR PRODUCTION OF (2E,6Z,8E)-N-ISOBUTYL-2,6,8-DECATRIENAMIDE (SPILANTHOL), AND FOODS, BEVERAGES, COSMETICS AND PHARMACEUTICAL PREPARATIONS EACH COMPRISING THE COMPOUND
申请人:Takasago International Corporation
公开号:EP2236489A1
公开(公告)日:2010-10-06
A problem as an object of the invention is to provide a production method of spilanthol in a large scale without using expensive reagents. The present invention provides a production method of N-isobutyl-2,6,8-decatrienamide, wherein a column chromatography purification step is not required in all processes.
A practical synthesis of (R)-homopipecolinic acid methyl ester 1 and (R)-homoproline methyl ester 2 was performed utilizing (i) a direct intramolecular cyclization of omega-chloro-beta-enamino esters 11 and 12, which were prepared from available (S)-1-phenylethylamine or (S)-1-(1-naphthyl)ethylamine and omega-chloro-beta-keto esters 5 and 10, respectively and (ii) a highly diastereoselective NaBH4 reduction followed by hydrogenolysis. The present method is a short-step process using inexpensive and readily available substrates and reagents with fewer wasted materials. (c) 2005 Elsevier Ltd. All rights reserved.