952598-77-5Relevant academic research and scientific papers
Construction of a benzo[b]azepine skeleton through decarboxylative ylide [6+1] annulations with modified vinyl benzoxazinanones
Li, Qing-Zhu,Jia, Zhi-Qiang,Chen, Lin,Zhang, Xiang,Leng, Hai-Jun,Zeng, Rong,Liu, Yan-Qing,Zou, Wen-Lin,Li, Jun-Long
, p. 814 - 818 (2021)
A Lewis acid-promoted [6+1] annulation between sulfur ylides and modified vinyl benzoxazinanones was described. In this reaction, the newly designed vinyl benzoxazinanones could serve as a novel six-atom synthon, and the key to success is the installation of an electron-withdrawing group on the alkene moiety of the benzoxazinanones. A broad range of substrates are compatible with this mild reaction system, thereby providing a facile and practical approach for constructing a benzo[b]azepine skeleton.
Access to 5,6-Spirocycles Bearing Three Contiguous Stereocenters via Pd-Catalyzed Stereoselective [4 + 2] Cycloaddition of Azadienes
Fairuz Binte Sheikh Ismail, Siti Nur,Yang, Binmiao,Zhao, Yu
, p. 2884 - 2889 (2021/05/05)
We present herein a highly diastereo- and enantioselective Pd-catalyzed [4 + 2] cycloaddition of benzofuran-derived azadienes with vinyl benzoxazinanones, which represents a rare highly stereoselective cycloaddition of this class of fused azadienes as a two-atom synthon. The use of a phosphoramidite ligand bearing a chiral secondary amine with a simple biphenyl backbone proved to be the key to construct the novel spirocyclic tetrahydroquinoline scaffold containing three contiguous stereocenters as a single diastereomer in high enantioselectivity.
Cycloadditions with Bromo-Substituted Morita-Baylis-Hillman Adducts of Isatins and N-(ortho-Chloromethyl)aryl Amides
Zhan, Gu,Shi, Ming-Lin,He, Qing,Du, Wei,Chen, Ying-Chun
, p. 4750 - 4753 (2015/10/12)
Efficient construction of a challenging aza-spirocycloheptane oxindole scaffold is reported through an unprecedented [4 + 3] cycloaddition reaction with bromo-substituted Morita-Baylis-Hillman adducts of isatins and N-(ortho-chloromethyl)aryl amides. Both reactive intermediates, the allylic phosphonium ylides and aza-o-quinone methides, were in situ generated, chemoselectively facilitated by a Lewis base and Bronsted base, respectively.
COMPOSITIONS AND METHODS FOR MODULATING GATED ION CHANNELS
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Page/Page column 136, (2008/06/13)
The alleged invention relates to indole derivatives according to formula 1, namely, wherein X is CH2, O, NR2 or NOR2 and wherein A is preferably a six membered ring involving a nitrogen heteroatom. These compounds and their pharmaceutical acceptable salts are used for modulating gated ion channels in order to treat pain, inflammatory disorders, neurological disorders, or diseases associated with the genitourinary or gastrointestinal systems.
