Two new aromatic acids from Clerodendrum formicarum Gürke (Lamiaceae) of Cameroon

Abstract

The ethanolic extract of the leaves of Clerodendrum formicarum, a Lameacious plant of Cameroon, afforded two new salicylic acid derivatives named formoic acids A and B along with four known constituents which have been obtained for the first time from this source. They include flemingipanic acid, martynoside, verbascoside, and seguinoside K. Structures of all the isolated constituents have been elucidated with the aid of 1D and 2D NMR spectroscopic techniques.

Keywords:

• formoic acids A and B
• aromatic acids
• Clerodendrum formicarum
• Lamiaceae

Acknowledgements

One of us (M.I.A.) kindly acknowledges the enabling role of the Higher Education Commission, Islamabad (Pakistan) and appreciates the financial support through the Indigenous Ph.D. 5000 Fellowship Program (Phase II).