9944. Vellosimine

Nomenclature

CAS number: 6874-98-2
Sarpagan-17-al; velosimine.
C19H20N2O; mol wt 292.37.
C 78.05%, H 6.89%, N 9.58%, O 5.47%.

Description and references

From bark of Geissosperum vellosii Allem., Apocynaceae: Rapoport et al., J. Am. Chem. Soc. 80, 1601 (1958). Structure: Rapoport, Moore, J. Org. Chem. 27, 2981 (1962); Ohashi et al., Tetrahedron 19, 2241 (1963).

Chemical structure

Properties

Crystals from methanol, mp 305-306°. Can be sublimed at 180-100° (0.01 mm). [α]D26 +48°. uv max (ethanol): 280, 289 nm (ε 8000, 6430).