1,5-Dimethyl-6H-pyridazino[4,5-b]carbazole, a 3-Aza Bioisoster of the Antitumor Alkaloid Olivacine.
作者:Norbert Haider、Eddy Sotelo
DOI:10.1248/cpb.50.1479
日期:——
A series of b-fused carbazoles structurally related to pyrido[4,3-b]carbazole-type alkaloids was prepared, utilizing the Diels-Alder reaction of 1-methylpyrano[3,4-b]indol-3(9H)-one with electron-deficient acetylenic dienophiles as the key step. The title compound (14) thus obtained in only four steps represents a new 3-aza analog of the antitumor natural product, olivacine.
利用1-甲基吡喃并[3,4-b]吲哚-3(9H)-的狄尔斯-阿尔德反应制备了一系列与吡啶并[4,3-b]咔唑型生物碱相关的b-融合咔唑缺电子的乙炔双亲亲油是关键步骤。这样仅用四个步骤就获得的标题化合物(14)代表了抗肿瘤天然产物奥利卡因的新的3-氮杂类似物。