Manguro Lawrence Onyango Arot, Wagai Samuel Otieno
a Chemistry Department , Maseno University , Maseno , Kenya.
b Botany Department , Rongo University College , Rongo , Kenya.
J Asian Nat Prod Res. 2016 Sep;18(9):854-64. doi: 10.1080/10286020.2016.1165674. Epub 2016 Apr 5.
Two new ursane-type triterpenes characterized as 3-oxo-24-acetoxy-11α-hydroxy-urs-12-ene (1) and methyl 3α-acetoxy-11α-methoxy-urs-12-en-24-oate (2), together with known compounds 3-11, were isolated from Boswellia rivae oleo-gum resin exudate. Their structural elucidation was accomplished using physical, chemical, and spectroscopic methods. The compounds exhibited weak to moderate antibacterial activities against some Gram-positive and Gram-negative bacteria.
从索马里乳香油胶树脂渗出物中分离出两种新的乌苏烷型三萜，分别鉴定为3-氧代-24-乙酰氧基-11α-羟基-乌苏-12-烯（1）和3α-乙酰氧基-11α-甲氧基-乌苏-12-烯-24-甲酯（2），以及已知化合物3-11。通过物理、化学和光谱方法完成了它们的结构解析。这些化合物对一些革兰氏阳性菌和革兰氏阴性菌表现出弱至中等的抗菌活性。
