Condensed heteroaromatic ring systems. Part 24. Synthesis of rigidin, a pyrrolo[2,3-d]pyrimidine marine alkaloid
作者:Takao Sakamoto、Yoshinori Kondo、Shuichiroh Sato、Hiroshi Yamanaka
DOI:10.1039/p19960000459
日期:——
synthesized from 2,4-dimethoxy-7-phenylsulfonylpyrrolo[2,3-d]pyrimidine. Lithiation of the pyrrolo[2,3-d]pyrimidine followed by electrophilic substitution with N, 4-dimethoxy-N-methylbenzamide afforded a 6-(4-methoxy)benzoyl derivative which by alkaline hydrolysis and subsequent iodination was converted into 2,4-dimethoxy-5-iodopyrrolo [2,3-d] pyrimidin-6-yl 4-methoxyphenyl ketone. The palladium-catalysed
海洋生物碱刚性蛋白是由2,4-二甲氧基-7-苯基磺酰基吡咯并[2,3- d ]嘧啶合成的。吡咯并[2,3- d ]嘧啶的锂化,然后用N,4-二甲氧基-N-甲基苯甲酰胺进行亲电取代,得到6-(4-甲氧基)苯甲酰基衍生物,其通过碱水解和随后的碘化反应转化为2,4 -二甲氧基-5-碘吡咯并[2,3- d ]嘧啶-6-基4-甲氧基苯基酮。用2-(4-甲氧基苯基)-1,3,2-二氧杂硼烷进行钯催化的芳基化反应,然后用三溴化硼脱甲基,得到刚性蛋白。