An improved synthesis of anticancer benzothiopyranoindazoles. An efficient large-scale β-aminoethylation procedure
作者:Vladimir G. Beylin、Norman L. Colbry、Anne B. Giordani、Om P. Goel、Donald R. Johnson、Robert L. Leeds、Boguslawa Leja、Edward P. Lewis、David M. Lustgarten、H. D. Hollis Showalter、Anthony D. Sercel、Michael D. Reily、Susan E. Uhlendorf、Katherine A. Zisek、Peter Mcdonnell
DOI:10.1002/jhet.5570280261
日期:1991.2
Improved processes for the synthesis of bulk quantities of the benzothiopyranoindazole clinical agent CI-958 and A-ring congeners is reported. The process chosen for scale-up operations achieves β-aminoethylation of an anilino precursor via a three-step sequence (acylation, reduction, deprotection) starting from N-(trityl)glycine. Detailed analytical data are reported for the target compounds and most
据报道,改进了合成大量苯并硫代吡喃并吲哚临床药物CI-958和A环同类物的方法。选择用于苯胺前体的比例放大操作实现β-aminoethylation过程通过一个三步序列(酰化,还原,脱保护)从起始Ñ(三苯甲基)甘氨酸- 。报告了目标化合物和大多数中间体的详细分析数据,并给出了CI-958的详细光谱。