Constitution of Conessine

Article metrics


PREVIOUS work has shown that the alkaloid, conessine, is a ditertiary base, C24H40N2, containing three N-methyl groups and one ethylenic linkage, and our work now establishes a relationship with the growing class of steroid bases. The absence of oxygen is noteworthy ; this is uncommon in the alkaloids, and the natural occurrence of an oxygen-free steroid derivative has not been reported previously.

Access options

Rent or Buy article

Get time limited or full article access on ReadCube.


All prices are NET prices.


  1. 1

    Siddiqui and Sharman, Proc. Ind. Acad. Sci., 6 A, 191 (1937).

  2. 2

    Riegel, Gold and Kubico, J. Amer. Chem. Soc., 65, 1772 (1943).

  3. 3

    Ber., 63, 126 (1930).

  4. 4

    Butenandt and Fleischer, Ber., 68, 2096 (1935). Marker, Kamm, Oakwood, Whittle and Lawson, J. Amer. Chem. Soc., 60, 1066 (1938).

Download references

Author information

Rights and permissions

Reprints and Permissions

About this article

Cite this article

HAWORTH, R., MCKENNA, J. & SINGH, N. Constitution of Conessine. Nature 162, 22 (1948) doi:10.1038/162022a0

Download citation

Further reading


By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.