A new phenylpropanoid glycoside from Leucas indica Linn.

Abstract

A new phenylpropanoid glycoside, α-l-rhamnopyranosyl-(1 → 3)-O-α-l-rhamnopyranosyl-(1 → 6)-1-O-caffeoyl-β-d-glucopyranoside (1) along with two known phenylethanoid glycosides (2–3) has been isolated from the aerial parts of Leucas indica Linn. Their structures were deduced from the spectroscopic studies and compared with the literature values.

Keywords:

• Leucas indica L.
• caffeoyl-β-d-glucopyranoside
• phenylpropanoid glycosides

Acknowledgements

The authors are grateful to Asian Network of Research on Antidiabetic Plants (ANRAP) and Human Resource Development Project, Bangladesh Council of Scientific and Industrial Research (BCSIR) for financial support to one of the authors (M.M.). A major part of this work was carried out at the H.E.J. Research Institute of Chemistry.