Enzyme-Mediated Preparation of Enantiomerically Pure p-Menthan- 3,9-diols and Their Use for the Synthesis of Natural p-Menthane Lactones and Ethers
摘要:
The diasiereoselective preparation of the p-menthane-3,9-diols (+/-)-12, (+/-)-13a, (+/-)-13b, and (+/-)-18 and the study of their enzymic resolution is described (Scheme 1). The corresponding enantiomer-enriched diols obtained by means of the lipase-mediated kinetic acetylation of the racemic diols are suitable synthetic precursors of many relevant p-menthane monoterpenes. Their usefulness is shown in the preparation of different natural products of this class that are interesting for industrial purposes because of their odor qualities, i.e., of the enantiomeric form of 3-hydroxy-p-menthan-9-oic acid lactone 1, of mintlactone 2, of the 3,9-epoxy-p-menth-1,8(10)-diene 10, and of the pheromone vesperal 11 (Schemes 2 and 3).
Sanghvi, Y. S.; Rao, A. S., Journal of Heterocyclic Chemistry, 1982, vol. 19, p. 1377 - 1380
作者:Sanghvi, Y. S.、Rao, A. S.
DOI:——
日期:——
UTILISATION DE FURANONES A TITRE D'INGREDIENTS PARFUMANTS
申请人:FIRMENICH SA
公开号:EP0621892A1
公开(公告)日:1994-11-02
EP0621892B1
申请人:——
公开号:EP0621892B1
公开(公告)日:1998-07-08
[EN] USE OF FURANONES AS SCENTING INGREDIENTS<br/>[FR] UTILISATION DE FURANONES A TITRE D'INGREDIENTS PARFUMANTS
申请人:——
公开号:WO1994012143A2
公开(公告)日:1994-06-09
[EN] Furanones of formula (I), wherein R<1> and R<2> are the same and each represents a methyl radical, or R<1> and R<2> are different and each represents a hydrogen atom or a methyl radical, or else R<1> and R<2> together represent a methylene radical, are useful as scenting ingredients for the preparation of scenting compositions and scented articles in that they impart coumarin and balsamtype fragrances. [FR] Les furanones de formule (I) dans laquelle les symboles R1 et R2, pris séparément, sont identiques et représentent chacun un radical méthyle, ou sont différents et représentent chacun un atome d'hydrogène ou un radical méthyle, ou, pris ensemble, représentent un radical méthylène, sont utiles à titre d'ingrédients parfumants pour la préparation de compositions parfumantes et d'articles parfumés, auxquels elles confèrent des odeurs de type coumariné et balsamique.
Enzyme-Mediated Preparation of Enantiomerically Pure p-Menthan- 3,9-diols and Their Use for the Synthesis of Natural p-Menthane Lactones and Ethers
The diasiereoselective preparation of the p-menthane-3,9-diols (+/-)-12, (+/-)-13a, (+/-)-13b, and (+/-)-18 and the study of their enzymic resolution is described (Scheme 1). The corresponding enantiomer-enriched diols obtained by means of the lipase-mediated kinetic acetylation of the racemic diols are suitable synthetic precursors of many relevant p-menthane monoterpenes. Their usefulness is shown in the preparation of different natural products of this class that are interesting for industrial purposes because of their odor qualities, i.e., of the enantiomeric form of 3-hydroxy-p-menthan-9-oic acid lactone 1, of mintlactone 2, of the 3,9-epoxy-p-menth-1,8(10)-diene 10, and of the pheromone vesperal 11 (Schemes 2 and 3).