Malonic acid derivatives and methods for their synthesis
申请人:ENIRICERCHE S.p.A.
公开号:EP0254080A2
公开(公告)日:1988-01-27
The present invention refers to a new class of malonic acid derivatives of general formula I
wherein R¹ and R², each independently, represent hydrogen or a carboxyl protecting group, and the residue R corresponds to the side-chain of the amino acids lysine, ornithine, tyrosine, cysteine, aspartic acid and glutamic acid wherein the additional functionalities are suitably protected.
The new compounds of the present invention are useful for preparing analogues of biologically active peptides wherein the direction of some amide bonds in which the amino acids lysine, ornithine, tyrosine, cysteine, aspartic acid or glutamic acid are involved, has been reversed.
本发明涉及一类新的丙二酸衍生物,其通式为 I
其中R¹和R²各自独立地代表氢或羧基保护基团,残基R对应于氨基酸赖氨酸、鸟氨酸、酪氨酸、半胱氨酸、天冬氨酸和谷氨酸的侧链,其中附加官能团受到适当保护。
本发明的新化合物可用于制备生物活性肽的类似物,其中赖氨酸、鸟氨酸、酪氨酸、半胱氨酸、天门冬氨酸或谷氨酸参与的某些酰胺键的方向已被逆转。
Method for producing alpha-substituted cysteine or salt thereof or synthetic intermediate of alpha-substituted cysteine
申请人:API Corporation
公开号:US10071958B2
公开(公告)日:2018-09-11
According to the present invention, it becomes possible to perform a process for converting into an α-substituted cysteine represented by general formula (1) or a salt thereof at low cost and on an industrial scale by employing a process that is routed through a compound represented by general formula (3) to a compound represented by general formula (6). Particularly, by employing a process that is routed through a compound represented by general formula (7-2), it becomes possible to detach a tert-butyl protection group in a simple manner and to produce the compound represented by general formula (1) with high purity. Furthermore, by employing a process that is routed through tert-butylthiomethanol or a process that is routed through a compound represented by general formula (9), it becomes possible to produce a compound represented by general formula (2) without generating bischloromethylether that is an oncogenic substance. In the production of an α-substituted-D-cysteine or a salt thereof, it becomes possible to perform a process for converting the compound represented by general formula (2) into a compound represented by general formula (3S) in one step by allowing an enzyme or the like to act on the compound represented by general formula (2).
Method for Producing Alpha-substituted Cysteine or Salt Thereof or Synthetic Intermediate of Alpha-substituted Cysteine
申请人:API Corporation
公开号:US20180251424A1
公开(公告)日:2018-09-06
According to the present invention, it becomes possible to perform a process for converting into an α-substituted cysteine represented by general formula (1) or a salt thereof at low cost and on an industrial scale by employing a process that is routed through a compound represented by general formula (3) to a compound represented by general formula (6). Particularly, by employing a process that is routed through a compound represented by general formula (7-2), it becomes possible to detach a tert-butyl protection group in a simple manner and to produce the compound represented by general formula (1) with high purity. Furthermore, by employing a process that is routed through tert-butylthiomethanol or a process that is routed through a compound represented by general formula (9), it becomes possible to produce a compound represented by general formula (2) without generating bischloromethylether that is an oncogenic substance. In the production of an α-substituted-D-cysteine or a salt thereof, it becomes possible to perform a process for converting the compound represented by general formula (2) into a compound represented by general formula (3S) in one step by allowing an enzyme or the like to act on the compound represented by general formula (2).
US4914226A
申请人:——
公开号:US4914226A
公开(公告)日:1990-04-03
[EN] METHOD FOR PRODUCING α-SUBSTITUTED CYSTEINE OR SALT THEREOF OR INTERMEDIATE FOR SYNTHESIS OF α-SUBSTITUTED CYSTEINE<br/>[FR] PROCEDE POUR LA PRODUCTION D'UNE CYSTEINE α-SUBSTITUEE OU D'UN SEL DE CELLE-CI OU INTERMEDIAIRE POUR LA SYNTHESE D'UNE CYSTEINE α-SUBSTITUEE