Cyclizative radical carbonylations of azaenynes by TTMSS and hexanethiol leading to α-silyl- and thiomethylene lactams. Insights into the E/Z stereoselectivities
Regiodivergent Annulation of Alkynyl Indoles To Construct Spiro-pseudoindoxyl and Tetrahydro-β-carbolines
作者:Yong-Qiang Zhang、Dao-Yong Zhu、Zhi-Wei Jiao、Bao-Sheng Li、Fu-Min Zhang、Yong-Qiang Tu、Zhigang Bi
DOI:10.1021/ol201194n
日期:2011.7.1
Regiodivergent annulations of 3-phenoxy alkynyl indoles have been developed and tuned by protective groups through gold catalysis. With electron-donating protective groups, the substrate followed a C3-selective annulation and gave structurally interesting tetrahydro-β-carboline derivatives possessing potential bioactivity. Using electron-withdrawing protective groups, the substrate underwent a C2-selective
Described herein are compounds that can be useful as bioactive agents. More specifically, the compounds described herein can be useful as both α
2B
and α
2C
adrenergic agonists. Methods of synthesis and administration of the compounds are also disclosed.
Described herein are compounds that can be useful as bioactive agents. More specifically, the compounds described herein can be useful as both α2B and α2C adrenergic agonists. Methods of synthesis and administration of the compounds are also disclosed.
Free-radical mediated stannylcarbonylation of azaenynes provides a general [n + 1]-type annulation approach leading to alpha-stannylmethylene lactams. The cyclization is unusual in its breadth, covering 4-exo, 5-exo, 6-exo, 7-exo, and 8-exo modes.
Geri Roberto, Polizzi Carmela, Lardicci Luciano, Caporusso Anna Maria, Gazz. chim. ital, 124 (1994) N 6, S 241-248
作者:Geri Roberto, Polizzi Carmela, Lardicci Luciano, Caporusso Anna Maria