Isolation and synthesis of a novel immunosuppressive 17α-substituted dammarane from the flour of the Palmyrah palm (Borassus flabellifer)
作者:L. Révész、P. Hiestand、L. La Vecchia、R. Naef、H.-U. Naegeli、L. Oberer、H.-J. Roth
DOI:10.1016/s0960-894x(99)00220-6
日期:1999.6
The noveltriterpene 1 with a dammarane skeleton and a hitherto unknown 17alpha-substitution pattern has been isolated from the Palmyrah palm in low yield and prepared by synthesis in larger quantities. 1 was shown to be an extremely potent immunosuppressant in vitro (MLR; IC50 = 10 ng/ml) and in vivo (DTH; ED50 = 0.01 mg/kg p.o.). A glucocorticoid like activity is excluded.
从丹葵棕榈中分离出具有丹玛烷骨架和迄今未知的17α-取代模式的新型三萜1,并通过大量合成制备。1在体外(MLR; IC50 = 10 ng / ml)和体内(DTH; ED50 = 0.01 mg / kg po)被证明是一种非常有效的免疫抑制剂。排除类似糖皮质激素的活性。