Celastraceae alkaloids

Catharanthus roseus, biosynthesis of terpenoid indole alkaloids in, 49, 222 (1997) Celastraceae alkaloids, 16, 215 (1977)... 

Celastraceae also elaborate other, more complex, alkaloids, also polyester sesquiterpenes, incorporating a macrocycle derived from an evonic, wilfordic, cassinic or other type pyridine dicarboxylic acid with an additional alkyl chain of the basic eudesmane cycle at C-3 and C-7 (Table III). Celastraceae alkaloids are well-documented for the European and Asian genera, particularly Catha, Celastrus, Euonymus and Trypterigium but are relatively rare among the Latin... 

Celastraceae Alkaloids.— These alkaloids have been reviewed.Two new bases, euonymine (47) and neo-euonymine (48), have been isolated from the seeds of Euonymus sieboldiana Blume. Their structures have been established by chemical transformations and spectral study. Neoeuonymine is converted into euonymine by O-acetylation." " Another new pair of members of this family has been isolated from Euonymus alatus forma striatus (Thunb.) Makino. These alkaloids, ala-tamine (49) and wilfordine (50), also had their structures elucidated by chemical... 

A review of the Celastraceae alkaloids has appeared and a new structure (47) has been proposed for periphylline, the alkaloid produced by Peripterygia marginata. This new assignment also modifies the structures for isoperiphylline, dihydroperiphylline i.e. 2,3-dihydro-), and neoperiphylline (i.e. 4,5-dehydro-). The synthesis of an eight- and a thirteen-membered-ring compound isomeric with (47) assisted in its structural elucidation. ... 

A Alkaloids from Nicotinic Acid (Celastraceae Alkaloids)... 

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