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    • 1. 发明专利
    • PROCESS FOR THE DE-ENRICHMENT OF ENANTIOMERICALLY ENRICHED SUBSTRATES
    • IL182589D0
    • 2007-07-24
    • IL18258907
    • 2007-04-16
    • AVECIA PHARMACEUTICALS LTDBLACKER ANDREW JOHNSTIRLING MATTHEW JOHN
    • C07B20100101C07B55/00C07C29/00
    • There is provided a process for the de-enrichment of enantiomerically enriched compositions which comprises reacting an enantiomerically enriched composition comprising at least a first enantiomer or diastereomer of a substrate comprising a carbon-heteroatom bond, wherein the carbon is a chiral centre and the heteroatom is a group VI heteroatom, in the presence of a catalyst system and optionally a reaction promoter to give a product composition comprising first and second enantiomers or diastereomers of the substrate having a carbon-heteroatom bond, the ratio of second to first enantiomer or disatereomer in the product composition being greater than the ratio of second to first enantiomer or disatereomer in the enantiomerically enriched composition. Preferred substrates include compounds of Formula (1) wherein: X represents O, S; R 1 , R 2 each independently represents an optionally substituted hydrocarbyl, a perhalogenated hydrocarbyl, an optionally substituted heterocyclyl group; or R 1 & R 2 are optionally linked in such a way as to form an optionally substituted ring(s); provided that R 1 and R 2 are selected such that * is a chiral centre. In a preferred process a compound of Formula : (2) wherein: X represents O, S; R 1 , R 2 each independently represents an optionally substituted hydrocarbyl, a perhalogenated hydrocarbyl, an optionally substituted heterocyclyl group; or R 1 & R 2 are optionally linked in such a way as to form an optionally substituted ring(s); provided that R1 and R2 are different, may be obtained.
    • 6. 发明申请
    • PROCESS FOR THE DE-ENRICHMENT OF ENANTIOMERICALLY ENRICHED SUBSTRATES
    • 去除强化基底的方法
    • WO2006046062A1
    • 2006-05-04
    • PCT/GB2005/004179
    • 2005-10-27
    • AVECIA PHARMACEUTICALS LIMITEDBLACKER, Andrew, JohnSTIRLING, Matthew, John
    • BLACKER, Andrew, JohnSTIRLING, Matthew, John
    • C07B55/00C07B31/00C07C29/145
    • C07B55/00C07B2200/07C07C29/00C07C33/22
    • There is provided a process for the de-enrichment of enantiomerically enriched compositions which comprises reacting an enantiomerically enriched composition comprising at least a first enantiomer or diastereomer of a substrate comprising a carbon-heteroatom bond, wherein the carbon is a chiral centre and the heteroatom is a group VI heteroatom, in the presence of a catalyst system and optionally a reaction promoter to give a product composition comprising first and second enantiomers or diastereomers of the substrate having a carbon-heteroatom bond, the ratio of second to first enantiomer or disatereomer in the product composition being greater than the ratio of second to first enantiomer or disatereomer in the enantiomerically enriched composition. Preferred substrates include compounds of Formula (1) wherein: X represents O, S; R 1 , R 2 each independently represents an optionally substituted hydrocarbyl, a perhalogenated hydrocarbyl, an optionally substituted heterocyclyl group; or R 1 & R 2 are optionally linked in such a way as to form an optionally substituted ring(s); provided that R 1 and R 2 are selected such that * is a chiral centre. In a preferred process a compound of Formula : (2) wherein: X represents O, S; R 1 , R 2 each independently represents an optionally substituted hydrocarbyl, a perhalogenated hydrocarbyl, an optionally substituted heterocyclyl group; or R 1 & R 2 are optionally linked in such a way as to form an optionally substituted ring(s); provided that R1 and R2 are different, may be obtained.
    • 提供了对富含对映体的组合物进行去富集的方法,该方法包括使包含至少第一对映异构体或包含碳 - 杂原子键的底物的非对映异构体的对映异构体富集的组合物反应,其中碳是手性中心,杂原子是 VI族杂原子,在催化剂体系和任选的反应促进剂的存在下,得到包含具有碳 - 杂原子键的底物的第一和第二对映异构体或非对映异构体的产物组合物,第二对映异构体或二聚异构体的比例 产物组成大于对映异构体富集组合物中第二至第一对映异构体或二聚异构体的比例。 优选的底物包括式(1)的化合物,其中:X表示O,S; R 1,R 2各自独立地表示任选取代的烃基,全卤代烃基,任选取代的杂环基; 或R 1和R 2任选地以使得形成任选取代的环的方式连接; 条件是选择R 1和R 2以使得*是手性中心。 在优选的方法中,式(2)的化合物其中:X表示O,S; R 1,R 2各自独立地表示任选取代的烃基,全卤代烃基,任选取代的杂环基; 或R 1和R 2任选地以使得形成任选取代的环的方式连接; 只要R1和R2不同,就可以得到。