Sesquiterpenoids and 2‐(2‐Phenylethyl)‐4H‐chromen‐4‐one (=2‐(2‐Phenylethyl)‐4H‐1‐benzopyran‐4‐one) Derivatives from Aquilaria malaccensis Agarwood

The four new sesquiterpenoids 1–4, and the new 2‐(2‐phenylethyl)‐4H‐chromen‐4‐one (=2‐(2‐phenylethyl)‐4H‐1‐benzopyran‐4‐one) derivative 5, together with the two known sesquiterpenoids 6 and 7, the five known chromenones 8–12, and 1‐hydroxy‐1,5‐diphenylpentan‐3‐one (13), were isolated from a 70% MeOH extract of Aquilaria malaccensis agarwood chips. Their structures were elucidated on the basis of comprehensive spectral analyses and comparison with literature data.