174402-52-9Relevant academic research and scientific papers
PROCESS FOR PRODUCING INDOLOPYRROLOCARBAZOLE DERIVATIVE
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Page/Page column 29, (2010/02/11)
The present invention provides a process for industrially advantageously producing a compound represented by the formula (I): or a pharmaceutically acceptable salt thereof, which is useful as an anticancer agent, and also provides a catalyst used for hydrogenation reaction in the process.
Processes for the preparation of indolopyrrolocarbazole derivatives
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Example 10, (2008/06/13)
This invention relates to processes for the preparation of intermediates which are useful in the synthesis of compounds of the general formula or pharmaceutically salts thereof, wherein R1 and R2 each represent an OH group, R1/
Synthesis and biological activities of NB-506 analogues: Effects of the positions of two hydroxyl groups at the indole rings
Ohkubo, Mitsuru,Nishimura, Teruyuki,Honma, Teruki,Nishimura, Ikuko,Ito, Satoru,Yoshinari, Tomoko,Suda, Hiroharu Arakawa Hiroyuki,Morishima, Hajime,Nishimura, Susumu
, p. 3307 - 3312 (2007/10/03)
In the course of a study of 6-N-amino-substituted analogues of NB-506 (1), a more potent anticancer drag, J-109,404 (2), in which the formyl group of NB-506 was replaced with a 1,3-dihydroxypropane group, was reported. A study of further modification in the positions of two hydroxyl groups at the indole rings of 2 resulted in the discovery of a 2,10-dihydroxy analogue, J- 107,088 (3), which is a promising anticancer agent with a broader therapeutic window than J-109,404.
Practical synthesis of indolopyrrolocarbazoles
Ohkubo, Mitsuru,Nishimura, Teruyuki,Jona, Hideki,Honma, Teruki,Morishima, Hajime
, p. 8099 - 8112 (2007/10/03)
A practical method for the synthesis of an indolo[2,3-a]pyrrolo[3,4- c]carbazole ring system is described. The method involves two key processes: a coupling reaction between indole and substituted methylmaleimide portions using lithium hexamethyldisilazide (LiHMDS) as a base, and the oxidative cyclization of bisindolylmaleimide with palladium (II) chloride. We applied this method to the synthesis of arcyriaflavin B (5), C (6) and D (7).
