549-92-8Relevant articles and documents
Koumine, Humantenine, and Yohimbane Alkaloids from Gelsemium elegans
Xu, You-Kai,Yang, Lin,Liao, Shang-Gao,Cao, Pei,Wu, Bin,Hu, Hua-Bin,Guo, Juan,Zhang, Ping
, p. 1511 - 1517 (2015/08/03)
Nine new alkaloids of the koumine (1-4), humantenine (5-7), and yohimbane (8, 9) types as well as 12 known analogues were isolated from the leaves and vine stems of Gelsemium elegans. Compound 1 is the first N-4-demethyl alkaloid of the koumine type, compound 7 is the first nor-humantenine alkaloid, and compounds 8 and 9 are the first N-1-oxide and the first seco-E-ring alkaloids, respectively, of the yohimbane type. Compounds 1 and 7 exhibited moderate cytotoxicity against five human tumor cell lines with IC50 values in the range 4.6-9.3 μM. (Figure Presented)
Synthesis of Sempervirine, a Pentacyclic Anhydronium Indole Alkaloid
Chatterjee,Sahu,Saha,Banerji
, p. 1259 - 1262 (2007/10/03)
Sempervirine (2,3,4,13-tetrahydro-1H-benz[g]indolo[2,3-a]quinolizin-6-ium, 1) the pentacyclic anhydronium indole alkaloid of Gelsemium sempervirens Ait. f. (Loganiaceae), has been synthesized in three steps from hexahydroisochroman-3-one(6) and N-2-(3-ind