[Non-isoflavonoid compounds of Iris tectorum]

Area of Science:

• Phytochemistry
• Natural Product Chemistry
• Pharmacognosy

Background:

• Iris tectorum is a plant with a history of traditional medicinal use.
• Previous research has focused on isoflavonoid constituents, leaving non-isoflavonoid compounds underexplored.

Purpose of the Study:

• To isolate and characterize non-isoflavonoid compounds from Iris tectorum.
• To identify novel compounds within the Iris tectorum plant.

Main Methods:

• Extraction and isolation of compounds using column chromatography on silica gel.
• Purification of compounds utilizing Sephadex LH-20 gel filtration.
• Structure elucidation through comprehensive spectral analysis and assessment of physicochemical properties.

Main Results:

• Five distinct non-isoflavonoid compounds were successfully isolated from Iris tectorum.
• The identified compounds were characterized as tetradecanoic acid (1), dihydro-kaempferide (2), apocynin (3), diapocynin (4), and tectorusid (5).
• Tetradecanoic acid (1) represents a new isolation from this plant species.

Conclusions:

• The isolation of tetradecanoic acid (1) is reported for the first time in Iris tectorum.
• Tectorusid (5) is identified as a novel compound isolated from a natural plant source for the first time.
• These findings expand the known chemical profile of Iris tectorum and highlight its potential for novel natural product discovery.