Title:
【発明の名称】アスコルビン酸の誘導体の製造方法
Document Type and Number:
Japanese Patent JP2507543
Kind Code:
B2
Abstract:
6-Aliphatic C2-20-carboxylic acid esters of ascorbic acid are prepared by esterifying the ascorbic acid with an aliphatic C2-20-carboxylic acid halide in the presence of an N,N-dialkylalkanecarboxamide, a cyclic amide of the 1-methyl-2- pyrrolidone type, a tetraalkylcarbamide such as tetramethylurea, a cyclic carbamide of the 1,3-dimethyl-2-imidazolidinone type or a phosphoric triamide of the hexamethylphosphoric triamide type. The 6-ascorbyl linoleate which can be prepared in this manner is novel and also a subject of the present invention. The 6-aliphatic C2-20-carboxylic acid esters of ascorbic acid which can be prepared in this manner are important alternative use forms of L-ascorbic acid (vitamin C).
Inventors:
HORUSUTO PAURINGU
KURISUTOFU BEERURI
KURISUTOFU BEERURI
Application Number:
JP15505788A
Publication Date:
June 12, 1996
Filing Date:
June 24, 1988
Export Citation:
Assignee:
HOFFMANN LA ROCHE
International Classes:
C07B41/12; B01J31/02; C07B31/00; C07B61/00; C07C67/00; C07C67/14; C07D307/62; (IPC1-7): C07D307/62
Attorney, Agent or Firm:
Heiyoshi Odashima