A New Penta <i>β</i>-D-Glucopyranosyl Diterpene from <i>Stevia rebaudiana</i>

• 作者: Srinivasa Rao Meneni Venkata Sai Prakash Chaturvedula
• 来源期刊: 有机化学国际期刊(英文)
• 学科: 化学
• 关键词: STEVIA rebaudiana COMPOSITAE Asteraceae Diterpenoid Glycoside Structure Characterization Spectral Data Hydrolysis Studies
• 年，卷（期）: 2017,（2）
• 页码范围: 91-98
• 页数: 8页
• 分类号: O6

摘要

A new steviol diterpene glycoside, 13-[(2-O-β-D-glucopyranosyl-β-D-glucopyranosyl)oxy] ent-kaur-16-en-19-oic acid-{2-O-[6-O-β-D-glucopyranosyl)-β-D-glucopyranosyl]-β-D-glucopyranosyl} ester (1) has been isolated from the commercial extract of the leaves of Stevia rebaudi-ana Bertoni. Structure of the new compound has been established on the basis of extensive NMR spectroscopy (1H &13C, TOCSY, HMQC, and HMBC) and High Resolution (HR) mass spectroscopic data as well as enzymatic and acid hydrolysis studies.