A sequential synthetic strategy towards unexplored dibenzo[b,f][1,4]thiazepine carboxamides: copper catalysed C–S cyclisation followed by Ugi type 3CC cascade
作者:Debasmita Saha、Preeti Wadhwa、Anuj Sharma
DOI:10.1039/c5ra04175a
日期:——
A two-step diversity oriented synthetic protocol has been developed to access a novel class of dihydrodibenzo[b,f][1,4]thiazepine-11-carboxamides via copper-mediated cyclisation followed by Ugi- Joullié reaction sequence.
Annulation of Diaryl(aryl)phosphenes and Cyclic Imines to Access Benzo-δ-phospholactams
作者:Yun Luo、Jiaxi Xu
DOI:10.1021/acs.orglett.0c02346
日期:2020.10.16
Microwave-assisted annulation of cyclicimine dibenzo[b,f][1,4]oxazepines and diaryl(aryl)phosphenes generated from diazo(aryl)methyl(diaryl)phosphine oxides through the Wolff rearrangement accesses pentacyclic benzo-δ-phospholactams, 4b,16-dihydrodibenzo[b,f]benzo[4,5][1,2]azaphosphinino[1,6-d][1,4]oxazepine 15-oxides, in good yields.
An efficient visible-light-induced Staudinger [2 + 2] annulation reaction between α-diazo ketones and dibenzo[b,f][1,4]oxazepine/thiazepine-imines under catalyst-free conditions has been developed. This protocol provides a facile method to synthesize tetracyclic dibenzo[b,f][1,4]oxazepine/thiazepine-fused β-lactams bearing a quaternary carbon center with a broad substrate scope and high efficiency
开发了一种在无催化剂条件下,α-重氮酮与二苯并[ b , f ][1,4]氧氮杂/硫氮杂亚胺之间有效可见光诱导的施陶丁格[2+2]成环反应。该方案提供了一种简便的方法来合成具有季碳中心的四环二苯并[ b,f ][1,4]氧氮杂/硫氮杂稠合β-内酰胺,具有广泛的底物范围和高效率(37个例子,高达>99%屈服)。
N-HETEROBICYCLYL-PIPERAZINYL OR-PIPERADINYL TRICYCLIC DERIVATIVES USEFUL AS DOPAMINE RECEPTOR LIGANDS
申请人:Allelix Biopharmaceuticals Inc.
公开号:EP0736024A1
公开(公告)日:1996-10-09
BICYCLIC NONANE AND DECANE COMPOUNDS HAVING DOPAMINE RECEPTOR AFFINITY