STUDIES ON THE ALKALOIDS OF ALANGIUM LAMARCKII THW.

Five new alkaloids have been isolated from the bark of Alangium lamarckii. Different salts, estimation of functional groups, determination of molecular formulae and physical properties have been studied. Experiments on the structure of one of the isolated alkaloids, Base B2, and the ultra-violet and the infra-red absorption spectra of the alkaloids and their degradation products have been described. The provisional formulae of the alkaloids are : BaseB1 -C19H26O2N(OCH3)(OH)2. mp. 197-98° ; BaseB2 -C17H31O(NCH3) (OCH3)2 (OH)3, m. p. 119-20° ; Base B3 –C16H19ON(OCH3) (OH)2, m. p. 160-61°; BaseB4-C17H19O3N(OCH3)2(OH)2, m.p. 149.51° and Base B5-C19H23O4N(OCH3)2(OH)2, m.p. 177-79°. The alkaloids are phenolic bases and contain condensed pyrrcle nucleus