Development of Two Complementary Syntheses for a Privileged CGRP Receptor Antagonist Substructure

Development of Two Complementary Syntheses for a Privileged CGRP Receptor Antagonist Substructure
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针对特殊 CGRP 受体拮抗子结构的两种互补合成的开发

DOI:
10.1021/op2003634
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发表时间:
2012
影响因子:
3.4
通讯作者:
Shashidhar Illendula
Shashidhar Illendula
中科院分区:
化学3区
文献类型:
--
作者:
David K. Leahy;L. V. Desai;R. Deshpande;Antony V. Mariadass;Sundaramurthy Rangaswamy;Santhosh K. Rajagopal;Lakshmi Madhavan;Shashidhar Illendula

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1-(Piperidin-4-yl)-1H-imidazo[4,5-b]pyridin-2(3H)-one (1) 是在 > 1000 种独特的 CGRP 受体拮抗剂中发现的一种特殊子结构。描述了从互补起始材料合成 1 的两种实用且有效的方法。一种路线采用化学选择性还原胺化,而第二种路线则利用氨替代物进行钯催化胺化,以克服选择性差的问题。
1-(Piperidin-4-yl)-1H-imidazo[4,5-b]pyridin-2(3H)-one (1) is a privileged substructure found in >1000 unique CGRP receptor antagonists. Two practical and efficient syntheses of 1 are described from complementary starting materials. One route features a chemoselective reductive amination, while the second route utilizes a Pd-catalyzed amination using an ammonia surrogate to overcome an issue of poor selectivity.
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