申请人:Nitto Denko Co. Ltd.
公开号:EP0435293A2
公开(公告)日:1991-07-03
This invention relates to methods for producing optically active hydroxyesters and also to methods for producing and purifying optically active five-membered ring lactones.
More specifically, the invention provides methods for efficiently, safely, and selectively producing and purifying optically active (R)-hydroxyester (shown by formula 1) and optically active (S)-hydroxyester (shown by formula 2) in high state of purity at ordinary temperature.
The invention also relates to application of the inter-convertible optically active (R)-five-membered ring lacton (shown by formula 5).
They are intermediates for synthesizing various medicines, agricultural chemicals, and biologically active substances, however especially useful for synthesizing pheromone of a noxious insect, Popillia japonica Newman.
(Here,R₁ denotes -C≡C-R₃ or -C=C-R₃; R₂ and R₃ denote straight chain or branched alkyl groups containing 1 to 10 carbon atoms; R₄ denotes alkyl groups, aralkyl groups, or haloalkyl groups containing 1 to 12 carbon atoms and the end group of R₄ may be carboxyl groups; * denotes asymmetricrbon atoms.)
本发明涉及生产光学活性羟酯的方法,也涉及生产和纯化光学活性五元环内酯的方法。
更具体地说,本发明提供了在常温下高效、安全、选择性地生产和纯化高纯度光学活性(R)-羟酯(如式 1 所示)和光学活性(S)-羟酯(如式 2 所示)的方法。
本发明还涉及可相互转化的光学活性(R)-五元环内酯(如式 5 所示)的应用。
它们是合成各种药物、农药和生物活性物质的中间体,但尤其适用于合成一种有害昆虫 Popillia japonica Newman 的信息素。
(这里,R₁ 表示 -C≡C-R₃ 或 -C=C-R₃;R₂ 和 R₃ 表示含有 1 至 10 个碳原子的直链或支链烷基;R₄ 表示含有 1 至 12 个碳原子的烷基、芳基或卤代烷基,R₄ 的末端基团可以是羧基;* 表示不对称碳原子)。