An efficient approach to γ-alkylidene γ-butyrolactones: Application to the syntheses of pyridazinones and diazocinones
摘要:
The efficient phototransformation of a variety of spirodiones 3 to gamma-alkylidene gamma-butyrolactones 4 and their application to the syntheses of biologically useful pyridazinones 14 and diazocinones 15 are described. (C) 1998 Elsevier Science Ltd. All rights reserved.
Efficient photochemical transformation of spiro[4.n]-2,5-diones to γ-alkylidene γ-butyrolactones: its relevance to photostability of Fredericamycin A
作者:Bipin Pandey、Ravinder S. Reddy、Pradeep Kumar
DOI:10.1039/c39930000870
日期:——
Irradiation of a variety of model spirodiones related to the antitumour antibiotic Fredericamycin A in various solvents at 300 nm furnishes quantitative yields of γ-alkylidene γ-butyrolactones; its relevance to the typical shape alteration, photostability and consequent biological response of Fredericamycin is discussed.
An efficient approach to γ-alkylidene γ-butyrolactones: Application to the syntheses of pyridazinones and diazocinones
作者:Ravinder S Reddy、K Saravanan、Pradeep Kumar
DOI:10.1016/s0040-4020(98)00315-9
日期:1998.6
The efficient phototransformation of a variety of spirodiones 3 to gamma-alkylidene gamma-butyrolactones 4 and their application to the syntheses of biologically useful pyridazinones 14 and diazocinones 15 are described. (C) 1998 Elsevier Science Ltd. All rights reserved.