Oxygen radical absorbance capacity

Chromatography

Caesalpinia

Antioxidant capacity

Stereochemistry

Absorbance

Organic chemistry

Trolox

Antioxidant

Medicine

Chemistry

Traditional medicine

Helvetica Chimica Acta

Five new cassane diterpenoids, caesalmins I–M ( 1 – 5 ), and 23 known analogs were isolated from the seeds of Caesalpinia minax. Their structures were elucidated by spectroscopic methods and comparison with reported data. The antioxidant properties of 1 – 28 were determined by the method of oxygen radical absorbance capacity of fluorescein (ORAC‐FL), and 14 compounds exhibited good antioxidant activities with ORAC‐FL values of 2.24–4.89 Trolox equivalents. The structureactivity relationship of the active compounds was also discussed.

Antioxidative Cassane Diterpenoids from the Seeds of <i>Caesalpinia minax</i>

Antioxidative Cassane Diterpenoids from the Seeds of Caesalpinia minax