Microwave-Assisted Concise Total Syntheses of Quinazolinobenzodiazepine Alkaloids
作者:Ji-Feng Liu、Mira Kaselj、Yuko Isome、Jennifer Chapnick、Bailin Zhang、Grace Bi、Daniel Yohannes、Libing Yu、Carmen M. Baldino
DOI:10.1021/jo051876x
日期:2005.12.1
quinazolinobenzodiazepine alkaloids sclerotigenin (1), (±)-circumdatin F (2), and (±)-asperlicin C (3) via novel microwave-assisted domino reactions were achieved in 55%, 32%, and 20% yields, respectively, from commercially available starting materials. A two-step total synthesis of (±)-benzomalvin A (4) was accomplished with an overall yield of 16%. Additionally, analogues of circumdatin E were synthesized
通过新颖的微波辅助多米诺反应,一锅法合成喹唑啉基苯并二氮杂al生物碱硬化素(1),(±)-环丁素F(2)和(±)-asperlicin C(3)。从商业上可获得的起始原料分别获得20%和20%的收率。(±)-苯并苹果醇A(4)的两步全合成完成,总产率为16%。此外,通过微波辐射促进的三组分一锅法顺序反应合成了环丁抑素E的类似物。最后,使用该微波辅助方案也实现了两步形式的(±)-asperlicin E(5)的正式全合成。