Five D: C-Friedo-Oleanane Triterpenes from the Seeds of Trichosanthes kirilowii MAXIM. and Their Anti-inflammatory Effects.
作者:Toshihiro AKIHISA、Ken YASUKAWA、Yumiko KIMURA、Michio TAKIDO、Wilhelmus C. M. C. KOKKE、Toshitake TAMURA
DOI:10.1248/cpb.42.1101
日期:——
Five triterpenes with a D : C-friedo-oleanane skeleton, D : C-friedo-oleana-7, 9(11)-diene-3β, 29-diol (3-epikarounidiol), 7-oxo-D : C-friedo-olean-8-en-3β-ol (7-oxoisomultiflorenol), 7-oxo-8β-D : C-friedo-olean-9(11)-ene-3α, 29-diol, D : C-friedo-olean-8-ene-3α, 29-diol (3-epibryonolol), and D : C-friedo-olean-8-ene-3β, 29-diol (bryonolol), the first four of which are new naturally occurring compounds, were isolated from the seeds of Trichosanthes kirilowii MAXIM. The structures were determined by spectral and chemical methods. 3-Epikarounidiol, 7-oxoisomultiflorenol, and 3-epibryonolol showed marked inhibitory activity against 12-O-tetradecanoylphorbol-13-acetate (TPA)-induced ear inflammation in mice. The 50% inhibitory dose of these triterpenes for TPA-induced inflammation (1 μg) was 0.2-0.6 mg/ear.
从Trichosanthes kirilowii MAXIM的种子中分离出五种具有D:C-friedo-oleanane骨架的三萜类化合物,即D:C-friedo-oleana-7,9(11)-diene-3β,29-diol(3-epikarounidiol)、7-oxo-D:C-friedo-olean-8-en-3β-ol(7-oxoisomultiflorenol)、7-oxo-8β-D:C-friedo-olean-9(11)-ene-3α,29-diol、D:C-friedo-olean-8-ene-3α,29-diol(3-epibryonolol)和D:C-friedo-olean-8-ene-3β,29-diol(bryonolol),其中前四种是新发现的天然化合物。通过光谱和化学方法确定了这些化合物的结构。3-Epikarounidiol、7-oxoisomultiflorenol和3-epibryonolol对小鼠12-O-tetradecanoylphorbol-13-acetate(TPA)诱导的耳部炎症具有显著的抑制活性。这些三萜类化合物对TPA诱导的炎症的5