Description
This alkaloid, obtained from Solanum congestijlorum Dun. DC., has the lower of the above two melting points when crystallized rapidly and the higher when crystallized slowly from organic solvents. It is dextrorotatory with [α]
20D + 122.7° (c 1.15, CHC1
3). Treatment with AC
20 in pyridine gives the tracetate which is not crystallizable. Hydrogenation over Pt0
2 yields the dihydro derivative, m.p. 282-5°C; [α]
20D + 25.9° (c 0.424, CHCl
3).
References
Sato et al., J. Org. Chem., 34, 1577 (1969)
