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13,19-Epoxy-12-hydroxy-14β-methyl-21-norsenecionan-11,16-dione

13,19-Epoxy-12-hydroxy-14β-methyl-21-norsenecionan-11,16-dione ??? ???
?? ??:
38763-74-5
???:
13,19-Epoxy-12-hydroxy-14β-methyl-21-norsenecionan-11,16-dione
???(??):
Swazine;13,19-Epoxy-12-hydroxy-14β-methyl-21-norsenecionan-11,16-dione;Spiro[[1,6]dioxacyclododecino[2,3,4-gh]pyrrolizine-5(2H),2'-oxirane]-2,7(6H)-dione, 3,4,9,11,13,14,14a,14b-octahydro-6-hydroxy-4,6-dimethyl-3-methylene-, (2'R,4S,6R,14aR,14bR)-
CBNumber:
CB42183198
???:
C18H23NO6
??? ??:
349.38
MOL ??:
38763-74-5.mol

13,19-Epoxy-12-hydroxy-14β-methyl-21-norsenecionan-11,16-dione ??

???
165°C
?? ?
611.7±55.0 °C(Predicted)
??
1.36±0.1 g/cm3(Predicted)
?? ?? (pKa)
12.78±0.40(Predicted)

??

13,19-Epoxy-12-hydroxy-14β-methyl-21-norsenecionan-11,16-dione C??? ??, ??, ??

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A hepatotoxic alkaloid isolated from Senecio swaziensis Compton, the base yields clusters of colourless crystals from EtOH. It is strongly laevorotatory with [α]20D - 103.5° (c 1.0, EtOH). The ultraviolet spectrum in ethanol has a single broad absorption maximum at 195 mil.

?? ??

Gordon-Gray et al., Tetrahedron Lett., 707 (1972)
Crystal structure: Laing, Sommerville., Tetrahedron Lett., 5183 (1972)

13,19-Epoxy-12-hydroxy-14β-methyl-21-norsenecionan-11,16-dione ?? ?? ? ???

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13,19-Epoxy-12-hydroxy-14β-methyl-21-norsenecionan-11,16-dione ?? ??

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