[1,4]Benzoxazine-2,3-diones as antiallergic agents
作者:Bernard Loev、Howard Jones、Richard E. Brown、Fu Chih Huang、Atul Khandwala、Mitchell J. Leibowitz、Paula Sonnino-Goldman
DOI:10.1021/jm00379a006
日期:1985.1
The synthesis of a series of [1,4]benzoxazine-2,3-diones and a new class of compounds, benzobisoxazinetetrones, is described. These compounds were evaluated for their effect in the rat mast cell (RMC) test passively sensitized in vitro with rat antiovalbumin serum and for their effect in inhibitory passive cutaneous anaphylaxis (PCA) in the rat. Some of these compounds are of the same potency level as disodium cromglycate in the RMC test and some are effective orally in PCA.
LOEV, B.;JONES, H.;BROWN, R. E.;HUANG, FU-CHIH;KHANDWALA, A.;LEIBOWITZ, M+, J. MED. CHEM., 1985, 28, N 1, 24-27
作者:LOEV, B.、JONES, H.、BROWN, R. E.、HUANG, FU-CHIH、KHANDWALA, A.、LEIBOWITZ, M+
DOI:——
日期:——
Rationalization of Benzazole-2-carboxylate versus Benzazine-3-one/Benzazine-2,3-dione Selectivity Switch during Cyclocondensation of 2-Aminothiophenols/Phenols/Anilines with 1,2-Biselectrophiles in Aqueous Medium
作者:Tejas M. Dhameliya、Sumit S. Chourasiya、Eshan Mishra、Pradeep S. Jadhavar、Prasad V. Bharatam、Asit K. Chakraborti
DOI:10.1021/acs.joc.7b01548
日期:2017.10.6
insights of these cyclocondensation reactions using the hard–soft acid–base principle, quantum chemical calculations (density functional theory), and orbital interaction studies rationalize the selectivityswitch of benzothiazole-2-carboxylates versus benzazine-3-ones/benzazine-2,3-diones. The presence of water facilitates these cyclocondensation reactions by lowering of the energy barrier.