The first totalsynthesis of the indole alkaloids (±)-aplicyanins A, B, and E, plus 17 analogues, all in racemic form, is reported. Modifications to the parent compound included changing the number of bromine substituents on the indole, the nature of the substituents on the indole nitrogen (H, Me, or OMe), and/or the oxidation level of the heterocyclic core tetrahydropyrimidine. Each compound was screened
The reaction of 5-arylidene(alkylidene)-2,2-dimethyl-1,3-dioxane-4,6-diones (1) (Meldrum's acid derivatives) with dimethylsulfoxonium methylide gave 1- aryl(alkyl) - 6,6 - dimethyl - 4,8 - dioxo - 5,7 -dioxaspiro [2.5] octanes (2) which, on treatment with sodium methoxide or ammonium hydroxide, gave exclusively E-1-methoxy-carboyl-2-aryl-cyclopropanecarboxylic acids (4) or Z-1-carbamoyl-2-aryl(alk
Benzies, David W. M.; Fresneda, Pilar Martinez; Jones, R. Alan, Journal of the Chemical Society. Perkin transactions I, 1986, p. 1651 - 1654
作者:Benzies, David W. M.、Fresneda, Pilar Martinez、Jones, R. Alan、McNab, Hamish
DOI:——
日期:——
Eco-friendly synthesis and antimicrobial activities of substituted-5-(1H-indol-3-yl)methylene)-2,2-dimethyl-1,3-dioxane-4,6-dione derivatives
作者:G. Thirupathi、M. Venkatanarayana、P. K. Dubey、Y. Bharathi Kumari
DOI:10.1007/s00044-013-0728-8
日期:2014.3
l-Tyrosine is an efficient catalyst for the condensation of substituted indole-3-aldehydes 1(a-d), N-methyl indole-3-aldehydes 4(a-d), and N-ethyl indole-3-aldehydes 6(a-d) with meldrum's acid (2) containing a cyclic active methylene group to produce 3(a-d), 5(a-d), and 7(a-d), respectively, in water at room temperature for 30 min. The antimicrobial activities of 3(a-d), 5(a-d), and 7(a-d) have been studied.
IZQUIERDO, M. L.;ARENAL, I.;BERNABE, M.;ALVAREZ, E. F., TETRAHEDRON, 1985, 41, N 1, 215-220
作者:IZQUIERDO, M. L.、ARENAL, I.、BERNABE, M.、ALVAREZ, E. F.