Studies on the chemical constituents of rutaceous plants. LXIV. Structural establishment of oxyterihanine, a phenolic benzo[c]phenanthridone alkaloid. Syntheses of phenolic benzo[c]phenanthridine alkaloids, terihanine and isoterihanine, and related compounds.
Total Synthesis of the Benzo[c]phenanthridine Alkaloids, Terihanine and Isoterihanine, and Their Antitumor Activity
摘要:
A new total synthesis of terihanine (2a) and isoterihanine (2b) was established by our new bond formation between the C4b and N5 positions of the benzo[c]phenanthridine ring based on a microwave-assisted thermal electrocyclic reaction of 2-cycloalkenylbenzaldoxime as an aza 6 pi-electron system. In addition, the antitumor activity of these synthesized compounds, including nitidine and nornitidine was evaluated in HCT-116 cells.
Synthesis and Cytotoxic Activities of a New Benzo[<i>c</i>]phenanthridine Alkaloid, 7-Hydroxynitidine, and Some 9-Oxygenated Benzo[<i>c</i>]phenanthridine Derivatives
作者:Takeshi Nakanishi、Masanobu Suzuki
DOI:10.1021/ol990775g
日期:1999.10.1
[formula: see text] A new benzo[c]phenanthridinealkaloid, 7-hydroxynitidine, was synthesized by a novel synthetic procedure. The cytotoxic activity of this compound against HeLa S3 cells was strong, but not greater than those of its mother compounds, nitidine and NK109. We also synthesized other 9-oxygenated benzo[c]phenanthridinealkaloids, 7-methoxynitidine, 9-demethylnitidine, nitidine, and fagaronine