Two new monoterpene esters from Illigera paviflora Dunn roots.

Two new monoterpene esters, illigerates H and I ( 1 and 2 ), and six known compounds actinodaphine ( 3 ), bulbocupnine ( 4 ), stephanine ( 5 ), hypserpanine B ( 6 ), betulinic acid ( 7 ) and gallic acid ( 8 ) were obtained from the root of Illigera paviflora Dunn. Their structures were elucidated by spectroscopic analysis. Anti-inflammatory and α-glucosidase inhibitory activity of some isolated compounds were assessed. Two monoterpenes 1 and 2 exhibited weak in vitro anti-inflammatory activity (IC ₅₀ 64.5 ± 5.3 and 79.2 ± 7.5 μM) while compounds 3-6 showed inhibition of α-glucosidase with IC ₅₀ values ranged from 87.17 to 118.74 μM.