Results 201 to 210 of about 38,470 (243)
Some of the next articles are maybe not open access.
Triterpenic Constituents of Lepechinia Chamaedryoides
Journal of Pharmaceutical Sciences, 1968Betulinic acid was isolated and identified from Lepechinia chamaedryoides collected in the summer, and ursolic acid was found in plant material collected in the spring.
openaire +2 more sources
1998
Triterpenes constitute a significant portion of the lipid substances of all plants; more than 4000 triterpenoids have been isolated. These compounds are precursors to steroids in both plants and animals. Steroids are components of membranes in plants. Both triterpenes and steroids occur free, as glycosides (Boar and Allen, 1973), or in other combined ...
openaire +1 more source
Triterpenes constitute a significant portion of the lipid substances of all plants; more than 4000 triterpenoids have been isolated. These compounds are precursors to steroids in both plants and animals. Steroids are components of membranes in plants. Both triterpenes and steroids occur free, as glycosides (Boar and Allen, 1973), or in other combined ...
openaire +1 more source
Enzymatic synthesis of cyclic triterpenes
Natural Product Reports, 2007This review covers recent advances in the chemistry and enzymology of squalene cyclase and oxidosqualene cyclase. The enzymatic cyclizations of squalene and oxidosqualene are the most remarkable steps in the biosynthesis of sterols and triterpenes. The polyenes are converted to various polycyclic triterpenes by different enzyme systems employing only ...
openaire +2 more sources
Journal of the Chemical Society D: Chemical Communications, 1971
M. De Rosa +3 more
openaire +1 more source
M. De Rosa +3 more
openaire +1 more source