Preparation and regiochemical assignments of new pyrazolo[3,4-c] [2,1]benzodiazepines
作者:Esther Arranz、Juan A. Díaz、Esther Morante、Carmen Pérez、Salvador Vega
DOI:10.1002/jhet.5570330126
日期:1996.1
The preparation of new pyrazolo[3,4-c][2,1]benzothiazepines substituted at the nitrogen atoms of the pyrazole moiety is described. It was carried out by reaction of the 4,9-dihydro-9-methyl-4,10,10-trioxo-1(2)H-pyrazolo[3,4-c][2,1]benzothiazepine (1) with several alkylating agents under both classical and phase-transfer catalysis (PTC) conditions. Assignments of the N-alkyl regioisomers obtained were
描述了在吡唑部分的氮原子上取代的新吡唑并[3,4- c ] [2,1]苯并噻氮杂的制备。它是通过4,9-二氢-9-甲基-4,10,10-三氧代-1(2)H-吡唑并[3,4- c ] [2,1]苯并噻氮pine(1)与在传统和相转移催化(PTC)条件下都可以使用几种烷基化剂。通过研究其1 H nmr光谱和进行NOE实验,对获得的N-烷基区域异构体进行分配。