摘要:
This invention relates to a new synthesis, intermediates and precursors leading to a mixture of the compounds 11 and 12 as shown below. It also relates to the resolution of the stereoisomeric mixture to provide in substantial stereochemical purity compound 12. The synthesis of the invention involves preparation of compound 7 and compound 10 as shown below and their reaction to prepare a mixture of compound 11 and compound 12.
摘要:
The present invention provides a process or the like which is employed for producing chloromethyl phosphate derivatives that are useful for producing water-soluble prodrugs, and which are excellent from the points of view of workability, operativity and energy saving. According to the present invention, there is provided a process for producing a composition containing a compound represented by the following formula (I) and a tertiary amine,
(wherein R1 and R2 are identical or different from each other, and represent a C1-C6 alkyl group, a C2-C6 alkenyl group or a C6-C14 aryl C1-C6 alkyl group which may have a substituent, and R1 and R2 may together form a ring), the proces comprising the step of adding the tertiary amine having a boiling point at 1 atmosphere of 150°C or higher to the compound represented by formula (I).
摘要:
Provided are compounds and methods useful for the preparation of compounds useful as inhibitors of beta-site amyloid precursor protein (APP)-cleaving enzyme.
摘要:
The present application discloses a method and a compound that are useful for preparation of a compound of Formula (XI). Furthermore, the present application discloses the compound of Formula (XI) comprising a small amount of impurities.
摘要:
5-(Difluoromethyl)pyrazine-2-carboxilic acid, which is a raw material for the construction of 5-(difluoromethyl)pyrazine-2-carboxamide, which is a common partial structural motif of the compound having an A production inhibitory action or a BACE1 inhibitory action, can be industrially advantageously produced by decarboxylating 5-[carboxy(difluoro)methyl]pyrazine-2-carboxylic acid, which is obtainable from 5-chloropyrazine-2-carboxylate.
摘要:
It is an object of the present invention to provide an efficient method for manufacturing heterocycle-substituted pyridine derivatives. The present invention provides a method for manufacturing a compound represented by the following formula (I):
the method including reacting a compound represented by the following formula (III):
and a compound represented by the following formula (II):
in a solvent and in the presence of a palladium catalyst and a base, wherein R 1 represents a hydrogen atom, etc.; R 2 represents a hydrogen atom, a C 1-6 alkyl group, an amino group that may be protected with a protective group, etc.; one of X and Y represents a nitrogen atom and the other represents a nitrogen atom or an oxygen atom; Q represents a leaving group; the ring A represents a 5- or 6-member heteroaryl ring or a benzene ring, which may have one or two halogen atoms or C 1-6 alkyl groups; Z represents a single bond, a methylene group, an ethylene group, an oxygen atom, etc.; R represents a hydrogen atom or a C 1-6 alkyl group, etc.; R 3 represents a hydrogen atom or a halogen atom, etc.; and R 4 represents a hydrogen atom or a halogen atom; provided that when Z represents a single bond, or when R 3 represents a hydrogen atom, then R 1 , R 2 , and R 4 cannot all be a hydrogen atom at the same time.
摘要翻译:本发明的目的是提供一种制备杂环取代的吡啶衍生物的有效方法。 本发明提供下述式(I)表示的化合物的制造方法:使下述式(III)表示的化合物与下述式(II)所示的化合物反应的方法:在溶剂和 在钯催化剂和碱的存在下,其中R 1表示氢原子等; R 2表示氢原子,C 1-6烷基,可被保护基保护的氨基等; X和Y中的一个表示氮原子,另一个表示氮原子或氧原子; Q表示离去组; 环A表示可具有一个或两个卤素原子或C 1-6烷基的5-或6-元杂芳基环或苯环; Z表示单键,亚甲基,亚乙基,氧原子等; R表示氢原子或C 1-6烷基等; R 3表示氢原子或卤素原子等; R 4表示氢原子或卤素原子; 条件是当Z表示单键时,或当R 3表示氢原子时,则R 1,R 2和R 4不能同时为氢原子。