The specification relates to compounds of Formula (I) and pharmaceutically acceptable salts thereof. The specification also relates to processes and intermediates used for their preparation, pharmaceutical compositions containing them and their use in the treatment of cell proliferative disorders.
FUKUYAMA, TOHRU;FRANK, R. K.;LAIRD, A. A., TETRAHEDRON LETT., 1985, 26, N 25, 2955-2958
作者:FUKUYAMA, TOHRU、FRANK, R. K.、LAIRD, A. A.
DOI:——
日期:——
Synthesis of Racemic, N-Benzylated Neoechinulin A and Isoneoechinulin A¹
作者:Branko Stanovnik、Jernej Wagger、Uroš Grošelj、Jurij Svete
DOI:10.1055/s-0029-1219812
日期:2010.5
Two N-benzylated analogues of the antioxidant, radical scavenging, and neuroprotective alkaloid neoechinulin A were prepared. Since, according to SAR studies, stereochemistry does not play an important role, both analogues were prepared in racemic form, using enaminone chemistry.
本研究制备了两种具有抗氧化、清除自由基和神经保护作用的生物碱新噌啉 A 的 N-苄基类似物。由于根据 SAR 研究,立体化学并不发挥重要作用,因此这两种类似物都是通过烯酮化学以外消旋形式制备的。
Enaminone-Based Synthesis of Dipodazine Derivatives
A series of racemic dipodazine analogues 9 were prepared in 22–80% yield from (3Z,6RS)-3-[(dimethylamino)methylidene]-6-methyl-1-(phenylmethyl)piperazine-2,5-dione (7) (Scheme 1), which was prepared in four steps from (RS)-alanine methyl ester hydrochloride. The preparation of nonracemic 7 from (S)-alanine methyl ester hydrochloride failed, since the introduction of the enamino functionality at position