摘要:
The invention relates to a novel method for producing scopine esters of the general formula (1), wherein X—, R, R1, R2, R3, R4, R3′, R4′, R6 and R6′ can have the meanings indicated in the claims and in the description.
摘要:
2-Chloro-4,6-diamino-7,8-dihydropyrimido[5,4-d]pyrimidine of the formula II wherein R1 denotes a hydrogen atom or a C1-C6 alkyl group, R2 denotes an optionally substituted C6-C10 aryl group, R3 denotes a hydrogen atom or a C1-C6 alkyl group, and R4 denotes a hydrogen atom or an optionally substituted C1-C6 alkyl, C3-C6 alkenyl, C3-C8 cycloalkyl or a 4- to 7-membered, nitrogen-containing heterocyclyl group, or R3 and R4 together with the nitrogen atom linked to them denote an optionally substituted heterocyclyl group, and PG1 denotes a C1-6 alkanoyl group.
摘要:
The present invention relates to a process for preparing 4,6-diaminopyrimido[5,4-d]pyrimidines of formula I, wherein R1 to R4 have the meanings given in claim 1, as well as new intermediate products which are involved in this process.