Dyhydrokaempferol-3-O-Ramnoside from Ethyl Acetate Extract Ki Encok (Plumbago zeynalica L.) Leaves

Nani Suryani, E. Julaeha, T. Herlina
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引用次数: 1

Abstract

Plumbago zeynalica L. plant belongs to the Plumbaginaceae family, which is spread as a weed in all tropical and sub-tropical countries, and its abundance is very high in Asia and Africa. P. zeynalica L. plants are ethnopharmacologically used as antitumor, antioxidant, antimicrobial, anticancer, wound healed, and anti-inflammatory. This study aims to isolate secondary metabolites from the fraction of P. zeynalica L. leaf extracts with work stages that included isolation and determination of chemical structures by spectroscopy. Based on the results of the separation and purification of the ethyl acetate fraction obtained isolates in the form of a yellow oil suspected as a flavonoid.  The chemical structure of the isolates was identified based on UV-Vis spectroscopy data giving maximum absorption at λmax 339.60 nm and 278.80 nm, which are typical for dihydroflavonol. IR spectroscopy analysis of the isolates provided data information on the presence of aliphatic OH, C-H groups, carbonyl groups (C = O), C = C aromatic groups, and ether strain (C-O-C).  NMR data showed that the isolate had the molecular formula of C 21 H 22 O 10 , and its molecular weight confirmed by MS spectrometer was obtained m/z 434. Isolates from this ethyl acetate fraction were suspected as dyhydrokaempferol-3-O-ramnoside or engeletin.
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二氢山奈酚-3- o - ramnoside (Plumbago zeynalica .)叶子
水杨花属水杨花科植物,作为杂草广泛分布于所有热带和亚热带国家,在亚洲和非洲的丰度非常高。在民族药理学上,莪术属植物具有抗肿瘤、抗氧化、抗菌、抗癌、伤口愈合、抗炎等作用。本研究旨在从莪术叶提取物中分离出次生代谢物,其工作步骤包括分离和光谱学分析。根据对乙酸乙酯部分的分离纯化结果,分离得到一种黄油,怀疑为黄酮类化合物。根据紫外可见光谱数据对分离物的化学结构进行了鉴定,最大吸收波长为λmax 339.60 nm和278.80 nm,为二氢黄酮醇的典型吸收波长。红外光谱分析提供了脂肪族OH、C- h基团、羰基(C = O)、C = C芳香基团和醚菌株(C-O-C)的存在数据信息。核磁共振数据表明,该分离物分子式为c21h22o10,质谱测定其分子量为m/ z434。从该乙酸乙酯部分分离的分离物被怀疑为二氢山奈酚-3- o -猫毛糖苷或恩格莱素。
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