A Pyridine-Based Donor–Acceptor Molecule: A Highly Reactive Organophotocatalyst That Enables the Reductive Cleavage of C–Br Bonds through Halogen Bonding
作者:Natsuki Kato、Takeshi Nanjo、Yoshiji Takemoto
DOI:10.1021/acscatal.2c02067
日期:2022.7.1
direct, photocatalytic reductive cleavage of the C–Br bond. A wide variety of alkyl bromides including unactivated ones can be used under ambient conditions without any additional activating agents to give the C–C coupling products in good yield. Mechanistic studies indicated that the photocatalyst interacts with alkyl bromides throughhalogenbonding and that the pyridine moiety is important for the progress
The discovery of peroxisome proliferator-activated receptor gamma (PPAR gamma) antagonists (also termed "selective PPAR gamma modulators, SPPAR gamma M") is now of a great interest in the treatment of diabetes and obesity. The structure of compound la (G3335, Fig. 1), a novel class of PPAR gamma antagonist, is entirely different from that of other reported PPAR gamma antagonists. A series of 35 novel analogues (1b-1, 9a-d, 13a-t) were designed, synthesized and evaluated against the agonistic effects exerted by rosiglitazone. These results indicated that most functional groups of la were conserved, and six new compounds (1b, 1c, and 9a-d) exhibited strong PPAR gamma antagonistic activities (IC50 values of 5.2-25.8 mu M) against 10 mu M rosiglitazone in the promotion of the PPAR gamma-LBD-CBP (ligand-binding domain and cAMP-response-element binding protein) interaction as investigated by yeast two-hybrid technology based assay. Molecular modeling studies for compounds 1a-d, 1h, 9c-d, and 13a were also presented. (C) 2008 Elsevier Masson SAS. All rights reserved.
Acetone-sensitized photocoupling of 5-bromouridine to tryptophan derivatives via electron-transfer process
作者:Satoru Ito、Isao Saito、Teruo Matsuura
DOI:10.1021/ja00545a024
日期:1980.12
GUILLAUME, HELEN A.;PERICH, JOHN W.;WADE, JOHN D.;TREGEAR, GEOFFREY W.;JO+, J. ORG. CHEM., 54,(1989) N4, C. 5731-5736
作者:GUILLAUME, HELEN A.、PERICH, JOHN W.、WADE, JOHN D.、TREGEAR, GEOFFREY W.、JO+