32550-50-8Relevant academic research and scientific papers
CARBAZOLE ALKALOIDS FROM GLYCOSMIS PENTAPHYLLA
Jash, S. S.,Biswas, G. K.,Bhattacharyya, S. K.,Bhattacharyya, P.,Chakraborty, A.,Chowdhury, B. K.
, p. 2503 - 2506 (1992)
Three carbazole alkaloids, glycozolicine, 3-formyl carbazole and glycosinine, have been isolated from the roots of Glycosmis pentaphylla.The structures of glycozolicine and glycosinine have been established as 5-methoxy-3-methyl carbazole and 2-methoxy-3-formyl carbazole, respectively, from physical and chemical evidence, and synthesis. Key Word Index - Glycosmis pentaphylla; Rutaceae; roots; carbazole alkaloids.
A novel CAN-SiO2-mediated one-pot oxidation of 1-keto-1,2,3,4-tetrahydrocarbazoles to carbazoloquinones: Efficient syntheses of murrayaquinone A and koeniginequinone A
Chakraborty, Suchandra,Chattopadhyay, Gautam,Saha, Chandan
scheme or table, p. 331 - 338 (2011/06/19)
One-pot oxidations of substituted 1-keto-1,2,3,4-tetrahydrocarbazoles (1) to carbazole-1,4-quinones (2) are efficiently carried out by CAN-SiO 2-mediated reaction. This generalized protocol was successfully extended to the synthesis of two naturally occurring carbazoloquinones: murrayaquinone A (2b) and koeniginequinone A (2g). A plausible mechanism for this novel reaction involves formation of a 9-hydroxy-2,3,4,9-tetrahydro-1H- carbazole-1-one followed by rearrangement to 1-hydroxycarbazole derivatives, which are further oxidized by cerium (IV) to carbazoloquinones.
Carbazoloquinones from Murraya koenigii
Saha,Chowdhury
, p. 363 - 366 (2007/10/03)
Two new carbazole alkaloids designated as koenigine-quinone A and koenigine-quinone B were isolated from the alcoholic extract of the stem bark of Murraya koenigii and their structures were established as 7-methoxy-3- methylcarbazole-1,4-quinone and 6,7-d
