Lathyrane Diterpenoids from the Roots of Euphorbia micractina and Their Biological Activities
摘要:
Seventeen new lathyrane diterpenoids (1 - 17) and two known analogues have been isolated from an ethanolic extract of Euphorbia micractina roots. Their structures including absolute configurations were determined by spectroscopic data interpretation and single-crystal X-ray crystallography. Compound 10 showed activity against HIV-1 replication in vitro, with an IC(50) value of 8.2 mu M. Compounds 6, 7, 11, 14, 15, and 18, at 10(-6) M, showed significant vascular-relaxing activities against phenylephrine-induced vasoconstriction with relaxation rates of 48%, 41%, 42%, 48%, 50%, and 53%, respectively.
DOI:
10.1021/np2001489
作为产物:
描述:
jolkinol D 、 乙酸酐 在
吡啶 作用下,
反应 48.08h,
以56%的产率得到(-)-(5E,12E,2S,3S,4S,9S,11S,15R)-3,15-diacetoxylathyra-5,12-dien-14-one
Enhancing Macrocyclic Diterpenes as Multidrug-Resistance Reversers: Structure–Activity Studies on Jolkinol D Derivatives
作者:Mariana Reis、Ricardo J. Ferreira、Maria M. M. Santos、Daniel J. V. A. dos Santos、Joseph Molnár、Maria-José U. Ferreira
DOI:10.1021/jm301441w
日期:2013.2.14
The phytochemicalstudy of Euphorbia piscatoria yielded jolkinol D (1) in a large amount, whose derivatization gave rise to 12 ester derivatives (2–13) and hydrolysis to compound 14. The in vitro modulation of P-gp of compounds 1–14 was evaluated through a combination of transport and chemosensitivity assays, using the L5178 mouse T lymphoma cell line transfected with the human MDR1 gene. Apart from
Seventeen new lathyrane diterpenoids (1 - 17) and two known analogues have been isolated from an ethanolic extract of Euphorbia micractina roots. Their structures including absolute configurations were determined by spectroscopic data interpretation and single-crystal X-ray crystallography. Compound 10 showed activity against HIV-1 replication in vitro, with an IC(50) value of 8.2 mu M. Compounds 6, 7, 11, 14, 15, and 18, at 10(-6) M, showed significant vascular-relaxing activities against phenylephrine-induced vasoconstriction with relaxation rates of 48%, 41%, 42%, 48%, 50%, and 53%, respectively.