Synthesis of (Carbo)nucleoside Analogues by [3+2] Annulation of Aminocyclopropanes
作者:Sophie Racine、Florian de Nanteuil、Eloisa Serrano、Jérôme Waser
DOI:10.1002/anie.201404832
日期:2014.8.4
(Carbo)nucleoside derivatives constitute an important class of pharmaceuticals, yet there are only few convergent methods to access new analogues. Here, we report the first synthesis of thymine‐, uracil‐, and 5‐fluorouracil‐substituted diester donor–acceptor cyclopropanes and their use in the indium‐ and tin‐catalyzed [3+2] annulations with aldehydes, ketones, and enol ethers. The obtained diester products
(碳)核苷衍生物构成一类重要的药物,但只有很少的融合方法来获得新的类似物。在这里,我们报道了胸腺嘧啶,尿嘧啶和5-氟尿嘧啶取代的二酯供体-受体环丙烷的首次合成及其在铟和锡催化的[3 + 2]环合中用醛,酮和烯醇醚的合成。 。所获得的二酯产物可以容易地脱羧并还原为相应的醇。该方法仅需四个或五个步骤即可获得各种新的(碳)核苷类似物,对于合成生物活性化合物的库非常有用。