Synthesis and biological evaluation of (20S,24R)-epoxy-dammarane-3β,12β,25-triol derivatives as α-glucosidase and PTP1B inhibitors
作者:Xiao-Tong Yang、Tian-Ze Li、Chang-An Geng、Pei Liu、Ji-Jun Chen
DOI:10.1007/s00044-021-02836-0
日期:2022.2
activity against α-glucosidase, and four compounds (8, 15, 26, 42) significantly inhibited PTP1B. It was noted that compounds 8 and 26 could inhibit both α-glucosidase and PTP1B as dual-target inhibitors with IC50 values of 489.8, 467.7 μM (α-glucosidase) and 319.7, 269.1 μM (PTP1B). Compound 26 was revealed to be a mix-type inhibitor on α-glucosidase and a noncompetitive-type inhibitor on PTP1B based
我们之前的研究中从青钱柳中获得的达玛烷三萜(20 S ,24 R )-epoxy-dammarane-3 β ,12 β ,25- triol 在体外对α-葡萄糖苷酶有抑制活性,抑制率为32.2%。浓度为 200 μM。为了揭示构效关系(SARs)并获得更多活性化合物,对羟基进行化学修饰合成了(20 S ,24 R )-epoxy-dammarane-3 β ,12 β ,25-triol 的42个衍生物。 (C-3 和 C-12),环 A 和 E,并测定它们的α-葡萄糖苷酶和PTP1B抑制活性。两种化合物 ( 8 , 26 ) 增加了对α-葡萄糖苷酶的活性,四种化合物 ( 8 , 15 , 26 , 42 ) 显着抑制了 PTP1B。值得注意的是,化合物8和26作为双靶点抑制剂可同时抑制α-葡萄糖苷酶和 PTP1B,其 IC 50值为 489.8、467.7 μM(α-葡萄糖苷酶)和 319