Efficient synthesis of morolic acid and related triterpenes starting from betulin
作者:Pu Zhang、Jia Hao、Jun Liu、Luyong Zhang、Hongbin Sun
DOI:10.1016/j.tet.2009.03.100
日期:2009.5
Morolic acid (1) is a naturally occurring pentacyclictriterpene whose derivatives exhibit promising anti-HIV and other biological activities. An efficient synthesis of 1 has been accomplished in 11 steps with a total yield of 24% starting from betulin. Some related natural triterpenes including moradiol (4), acridocarpusic acid D (5), acridocarpusic acid E (6), and moronic aldehyde (7) have also been
The present invention concerns novel pharmaceutically active triterpene derivatives, pharmaceutical compositions containing the same, their use as medicaments, and the use of the compounds for the manufacture of specific medicaments. The present invention also concerns a method of treatment involving administration of the compounds. Specifically, the compounds are derivatives of betulinic acid having substitutions at one or more of the C-3, C2-8 and C-19 positions as further described herein. The novel compounds are useful as antiretroviral agents. In particular, the novel compounds are useful for the treatment of Human Immunodeficiency Virus (HIV).
60. Triterpenoids. Part I. Morolic acid, a new triterpenoid sapogenin
作者:D. H. R. Barton、C. J. W. Brooks
DOI:10.1039/jr9510000257
日期:——
Synthesis of olean-18(19)-ene derivatives from betulin
作者:O. B. Flekhter、N. I. Medvedeva、G.A. Tolstikov、F. Z. Galin、M. S. Yunusov、Huong Nguen Thi Mai、Le Viet Tien、I. V. Savinova、E. I. Boreko、L. P. Titov、I. V. Glukhov
DOI:10.1134/s1068162009020125
日期:2009.3
The rare olean-18(19)-ene triterpenoids moradiol and moronic acid were synthesized from betulin, and their antiviral properties were investigated.
Klinot,J.; Vystrcil,A., Collection of Czechoslovak Chemical Communications, 1964, vol. 29, p. 516 - 530