PhI(OAc)2-mediated one-pot oxidative decarboxylation and aromatization of tetrahydro-β-carbolines: synthesis of norharmane, harmane, eudistomin U and eudistomin I
Efficient and Practical One-Pot Conversions of N-Tosyltetrahydroisoquinolines into Isoquinolines and of N-Tosyltetrahydro-β-carbolines into β-Carbolines through Tandem β-Elimination and Aromatization
An efficient, practical, and general method for conversions of N-tosyltetrahydroisoquinolines (N-tosyl-THIQs) into isoquinolines and of N-tosyltetrahydro-β-carbolines (N-tosyl-THBCs) into β-carbolines is described. Treatment of N-tosyl-THIQs or N-tosyl-THBCs with base in dimethyl sulfoxide afforded dihydroisoquinolines or dihydro-β-carbolines as intermediates, and these were then oxidized in situ by
Synthesis of β-carbolines via a silver-mediated oxidation of tetrahydro-β-carbolines
作者:Sierra D. Durham、Brianna Sierra、Maximillian J. Gomez、Jennifer K. Tran、Marc O. Anderson、Nick A. Whittington-Davis、Scott Eagon
DOI:10.1016/j.tetlet.2017.05.098
日期:2017.7
The oxidation of tetrahydro-β-carbolines to β-carbolines using silver carbonate was developed as an alternative to current methods. The oxidation is extremely mild and provides the products in modest to good yields after purification. A number of functional groups are tolerated by this methodology, including reduction-sensitive groups which are often cleaved with other methods. Though the mechanism
Bradsher,C.K.; Litzinger,E.F., Journal of Heterocyclic Chemistry, 1964, vol. 1, p. 168 - 170
作者:Bradsher,C.K.、Litzinger,E.F.
DOI:——
日期:——
Design, synthesis and biological evaluations of quaternization harman analogues as potential antibacterial agents
作者:Jiangkun Dai、Wenjia Dan、Siyu Ren、Congguo Shang、Junru Wang
DOI:10.1016/j.ejmech.2018.10.012
日期:2018.12
ciprofloxacin (6.9723). The results indicated that the quaternization harman analogues might exert their bactericidal effect by damaging bacterial cell membrane and wall, and disrupting the function of type II topoisomerase. In addition, the in vivo antibacterial assay with a protective efficacy of 81.3% further demonstrated the potential of these derivatives as new bactericides and antibiotics.
PhI(OAc)<sub>2</sub>-mediated one-pot oxidative decarboxylation and aromatization of tetrahydro-β-carbolines: synthesis of norharmane, harmane, eudistomin U and eudistomin I