Iodine-promoted synthesis of acylindolizine derivatives from acetylenecarboxylates and pyridinium, isoquinolinium, or quinolinium ylides
作者:Juanjuan Liu、Peiyun Yan、Yan Li、Zhengquan Zhou、Weijian Ye、Juan Yao、Cunde Wang
DOI:10.1007/s00706-013-1120-6
日期:2014.4
AbstractAn iodine-promoted synthesis of acylindolizinecarboxylates via 1,3-dipolar cycloaddition of nitrogen ylides with acetylenecarboxylates and subsequent aromatization for the generation of a wide range of structurally interesting, pharmacologically and photoelectrically significant compounds is reported. Only readily available materials, mild conditions, and operationally trivial reaction protocols
Iodine-Promoted Synthesis of 1-Alkyl-3-aroylindolizines from<i>N</i>-(Aroylmethyl)pyridinium Salts and Aliphatic Aldehydes
作者:Chen Tan、Peiyun Yan、Weijian Ye、Juan Yao、Weiming Wu、Cunde Wang
DOI:10.1002/hc.21137
日期:2014.1
An effective and practical method has been developed for the diversity-oriented synthesis of 1-alkyl-3-aroylindolizines via the 1,3-dipolar cycloaddition of pyridinium ylides and aliphaticaldehydes in the presence of molecular iodine and a catalytic amount of MnO2. The synthesis proceeds by tandem reactions involving [3+2] cycloaddition, dehydration of the cycloadduct, and dehydroaromatization. Molecular
Synthesis of 2-(thienyl-2-yl or -3-yl)-4-furyl-6-aryl pyridine derivatives and evaluation of their topoisomerase I and II inhibitory activity, cytotoxicity, and structure–activity relationship
作者:Pritam Thapa、Radha Karki、Hoyoung Choi、Jae Hun Choi、Minho Yun、Byeong-Seon Jeong、Mi-Ja Jung、Jung Min Nam、Younghwa Na、Won-Jea Cho、Youngjoo Kwon、Eung-Seok Lee
DOI:10.1016/j.bmc.2010.01.065
日期:2010.3
A series of 2-(thienyl-2-yl or -3-yl)-4-furyl-6-aryl pyridine derivatives were designed, synthesized, and evaluated for their topoisomerase I and II inhibition and cytotoxic activity against several human cancer cell lines. Compounds 10–19 showed moderate topoisomerase I and II inhibitory activity and 20–29 showed significant topoisomerase II inhibitory activity. Structure–activity relationship study