The invention is concerned with vinylogous acids derivatives of formula (I)
wherein A and R
1
to R
6
are as defined in the description and in the claims, as well as physiologically acceptable salts thereof. These compounds inhibit chymase and can be used as medicaments.
Asymmetric Cascade Dearomatization–Cyclization Reaction of Tryptamines with β,γ-Alkynyl-α-imino Esters: Access to Hexahydropyrrolo[2,3-b]indole-Containing Tetrasubstituted α-Amino Allenoates
作者:Chhavi Khajuria、Nidhi Saini、Parbat Subba、Vinod K. Singh
DOI:10.1021/acs.joc.4c01021
日期:2024.7.19
An organocatalyticenantio- and diastereoselectivesynthesis of hexahydropyrrolo[2,3-b]indole-containing tetrasubstituted α-amino allenoates, exhibiting both axial and central chirality, has been accomplished via cascade dearomatization–cyclization reaction. The γ-addition to β,γ-alkynyl-α-imino esters provides a library of densely substituted highly enantioenriched allenes in high yields and excellent
通过级联脱芳构化-环化反应,有机催化对映和非对映选择性合成含有六氢吡咯并[2,3- b ]吲哚的四取代α-氨基联烯酸酯,具有轴向和中心手性。 β,γ-炔基-α-亚氨基酯的 γ-加成提供了高产率和优异立体选择性的密集取代的高度对映体富集的丙二烯库。此外,该方法的范围也已扩展到色氨酸。进行了放大反应和产品的合成转化,以证明该方法的实际用途。