Physalins are
steroidal constituents of ''
Physalis'' plants which possess an unusual 13,14-seco-16,24-cyclo-steroidal ring skeleton (where the
bond
Bond or bonds may refer to:
Common meanings
* Bond (finance), a type of debt security
* Bail bond, a commercial third-party guarantor of surety bonds in the United States
* Chemical bond, the attraction of atoms, ions or molecules to form chemical ...
that is normally present between the 13 and 14 positions in other steroids is broken while a new bond between positions 16 and 24 is formed; see figure below).
Since the isolation and the structure determination of
Physalin A Physalins are steroidal constituents of ''Physalis'' plants which possess an unusual 13,14-seco-16,24-cyclo-steroidal ring skeleton (where the covalent bond, bond that is normally present between the 13 and 14 positions in other steroids is broken w ...
and
Physalin B Physalins are steroidal constituents of ''Physalis'' plants which possess an unusual 13,14-seco-16,24-cyclo-steroidal ring skeleton (where the bond that is normally present between the 13 and 14 positions in other steroids is broken while a new bond ...
in 1969, more than a dozen Physalins were isolated from ''Physalis'' species, ''
Physalis alkekengi'', ''
Physalis angulata'', and ''
Physalis lancifolia
''Physalis'' (, , , , from φυσαλλίς ''phusallís'' "bladder") is a genus of approximately 75 to 90 flowering plants in the nightshade family ( Solanaceae), which are native to the Americas and Australasia. At least 46 species are endem ...
''. These compounds have
antimicrobial, and
antiparasitic effects.
References
{{Reflist, 2
Steroids