104669-20-7Relevant academic research and scientific papers
STUDIES ON INDIAN MEDICINAL PLANTS : PART 91 - STRUCTURE AND SYNTHESIS OF ALAMARIDINE. A NOVEL 5-METHYLBENZOPYRIDOQUINOLIZINE ALKALOID FROM ALANGIUM LAMARCKII
Bhattacharjya, Anup,Mukhopadhyay, Ranjan,Sinha, Radhika Ranjan,Ali, Esahak,Pakrashi, Satyesh C.
, p. 3477 - 3488 (2007/10/02)
The structure of alamaridine (1), a novel benzopyridoquinolizine alkaloid, was established by spectral data.However, its stereochemistry could only be determined now by a total synthesis involving the key cyclisation of an 1-methyl-2-pyridylmethyl-3,4-dihydroisoquinolinium salt 19a in presence of pivaloyl chloride and triethylamine.O-Benzyldehydroalamaridine thus formed was reduced by sodium cyanoborohydride and then deprotected to obtain alamaridine (1) and 5-epi-alamaridine (26).Isoalamaridine (27) and its 5-epimer (28) were also synthesised following the same route.
Aza analogues of protoberberine and phtalideisoquinoline alkaloids
Jahangir,MacLean, David B.,Holland, Herbert L.
, p. 1031 - 1035 (2007/10/02)
Anions derived from furopyridin-3(1H)-one, by treatment with lithium diisopropylamide, react with substituted, 3,4-dihydroisoquinolines and 2-methyl-3,4-dihydroisoquinolinium salts yielding nitrogen analogues of protoberberine and phtalideisoquinoline alkaloids, respectively.
