Polyacetylated labdane-type diterpenoids, ptychantins P–R from Chinese liverwort Ptychanthus striatus

Abstract

Three new polyacetylated labdane diterpenoids ptychantins P–R (1–3) and four known compounds (4–7) were isolated from an EtOH extract of the Chinese liverwort Ptychanthus striatus (Lehm. & Lindenb.) Nees. Their structures were established by extensive analysis of spectroscopic data (IR, UV, HRESIMS, 1D NMR, and 2D NMR).

Keywords::

• Ptychanthus striatus
• liverwort
• labdane diterpenoids
• ptychantin

Additional information

Funding

This work was financially supported by the National Natural Science Foundation of China [grant number 81273383] and [grant number 81473107].