''Gnetum cleistostachyum'' is a liana species in the ''Sessiles'' subsection of the genus ''
Gnetum
''Gnetum'' is a genus of gymnosperms, the sole genus in the family Gnetaceae within the Gnetophyta. They are tropical evergreen trees, shrubs and lianas. Unlike other gymnosperms, they possess vessel elements in the xylem. Some species have bee ...
'' described from South East Yunnan.
The name is still invalid and
efloras states it is advisable to postpone validating it until more complete collections, particularly with seeds, can be studied.
The stilbene derivatives,
gnetucleistol A,
B and
C,
gnetifolin A,
p-hydroxycinnamic acid,
piceatannol
Piceatannol is the organic compound with the formula . Classified as a stilbenoid and a phenol, it is a white solid, although samples often are yellow owing to impurities.
Natural occurrences
Piceatannol and its glucoside, astringin, are found i ...
,
resveratrol,
bisisorhapontigenin A,
gnetuhainin P,
gnetulin, the
stilbenolignans,
gnetucleistol F,
gnetofuran A,
lehmbachol D,
gnetifolin F and
gnetumontanin,
gnetucleistol D (2-methoxyoxyresveratrol),
gnetucleistol E (3-methoxy-isorhapontigenin),
rhapontigenin
Rhapontigenin is a stilbenoid. It can be isolated from ''Vitis coignetiae'' or from '' Gnetum cleistostachyum''.
It shows an action on prostate cancer cells. It has been shown to inhibit the human cytochrome P450 1A1, an enzyme implicated in the ...
,
isorhapontigenin,
4-methoxyresveratrol and
pinosylvin
Pinosylvin is an organic compound with the formula C6H5CH=CHC6H3(OH)2. A white solid, it is related to trans-stilbene, but with two hydroxy groups on one of the phenyl substituents. It is very soluble in many organic solvents, such as acetone.
O ...
can be found in ''G. cleistostachyum''.
References
External links
Gnetaceae
Plants described in 1975
Flora of Yunnan
{{gymnosperm-stub