A simple method has been developed to obtain ursolic acid (UA) by crystallization and recrystallization of the ethanol extract of Clinopodium revolutum. Its structure was confirmed by 1D (¹H-, ¹³C-, DEPT 45, 90 and 135) and 2D (COSY, HMBC and HSQC) nuclear magnetic resonance (NMR) spectroscopy and Fourier transform infrared spectroscopy (FT-IR). The results provide a theoretical basis for considering the species Clinopodium revolutum with a source of UA.

中文翻译：

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一种获得熊果酸的简单方法

已经开发了一种简单的方法，该方法通过结晶衣藻（Clinopodium revolutum）的乙醇提取物的结晶和重结晶来获得熊果酸（UA）。它的结构通过1D（¹ H-，¹³ C-，DEPT 45，90和135）和2D（COSY，HMBC和HSQC）核磁共振（NMR）光谱和傅里叶变换红外光谱（FT-IR）确认。该结果为考虑具有UA来源的Clinopodum revolutum物种提供了理论基础。