[Phenolic components from herbs of Dendrobium aphyllum]

Area of Science:

• Phytochemistry
• Natural Product Chemistry
• Pharmacognosy

Context:

• The orchid genus Dendrobium is a rich source of bioactive natural products.
• Dendrobium aphyllum is traditionally used in ethnomedicine, necessitating phytochemical investigation.
• Understanding the chemical composition of medicinal plants is crucial for drug discovery.

Purpose:

• To isolate and identify the phenolic constituents of Dendrobium aphyllum.
• To characterize novel compounds from this botanical source.
• To contribute to the chemotaxonomic understanding of the Dendrobium genus.

Summary:

• Eleven phenolic compounds were isolated and identified from Dendrobium aphyllum using chromatographic and spectroscopic methods.
• The identified compounds include nine bibenzyls (moscatilin, gigantol, batatasin, tristin, etc.) and two benzylethanyl compounds (salidroside and p-hydroxylbenzylacetic acid).
• Compounds 10 (salidroside) and 11 (p-hydroxylbenzylacetic acid) were isolated from this plant for the first time, with all eleven compounds being new to the Dendrobium genus.

Impact:

• This research expands the known phytochemical profile of Dendrobium aphyllum.
• The identification of novel compounds provides a basis for further pharmacological studies.
• The findings contribute to the broader knowledge of natural products chemistry and potential therapeutic agents.