Synthesis and evaluation of in vivo antioxidant, in vitro antibacterial, MRSA and antifungal activity of novel substituted isatin N- (2,3,4,6-tetra- O -acetyl-β -d- glucopyranosyl)thiosemicarbazones
作者:Nguyen Dinh Thanh、Nguyen Thi Kim Giang、Tran Ha Quyen、Doan Thi Huong、Vu Ngoc Toan
DOI:10.1016/j.ejmech.2016.07.074
日期:2016.11
new isatin N-(2,3,4,6-tetra-O-acetyl-β-d-glucopyranosyl)thiosemicarbazones 4a-t with different substituents at 1-, 5- and 7-positions of isatin ring have been synthesized by reaction of N-(2,3,4,6-tetra-O-acetyl-β-d-glucopyranosyl)thiosemicarbazide 2 with corresponding isatins 3a-t. Compounds 4a-t were evaluated in vivo for antioxidant activity and in vitro for anti-microorganism activities. The MIC
合成了一些新的靛红N-(2,3,4,6-四-O-乙酰基-β- d-吡喃葡萄糖基)硫代半咔唑酮4a-t,在靛红环的1、5和7位具有不同的取代基。的反应ñ - (2,3,4,6-四- ø -乙酰基β -D-吡喃葡萄糖基)氨基硫脲2与相应的靛红3A-吨。在体内评价化合物4a-t的抗氧化活性,并在体外评价化合物的抗微生物活性。发现革兰氏阳性菌(MIC = 1.56-6.25μM),革兰氏阴性菌(MIC = 12.5μM)和真菌的MIC值黑曲霉(MIC = 3.12–12.5μM),尖孢镰刀菌(MIC = 6.25–12.5μM)和啤酒酵母(MIC = 6.25–12.5μM)。关于抗氧化活性,4c-i和4m-r的SOD,GHS-Px和过氧化氢酶活性分别为MIC = 10.57–10.85、0.27–0.93和345.45–399.75单位/ mg蛋白。三种临床MRSA分离物的化合物4e-h的MIC值为0