Anti-AIDS agents 88. Anti-HIV conjugates of betulin and betulinic acid with AZT prepared via click chemistry.
In the present study, a new strategy to link AZT with betulin/betulinic acid (BA) by click chemistry was designed and achieved. This conjugation via a triazole linkage offers a new direction for modification of anti-HIV triterpenes. Click chemistry provides an easy and productive way for linking two molecules, even when one of them is a large natural product. Among the newly synthesized conjugates, compounds 15 and 16 showed potent anti-HIV activity with EC(50) values of 0.067 and 0.10 µM, respectively, which are comparable to that of AZT (EC(50): 0.10 µM) in the same assay.
Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, USA.
Ibrahim D
ID
Bori
Hsin-Yi
HY
Hung
Keduo
K
Qian
Chin-Ho
CH
Chen
Susan L
SL
Morris-Natschke
Kuo-Hsiung
KH
Lee