Chemical Constituents from Aerial Parts of Curcuma longa

Abstract:

In order to understand the chemical constituents of Curcuma longa L., fourteen compounds were isolated from its aerial parts. On the basis of spectral data, they were identified as quercetin 3-O-α-L-rhamnopy- ranoside (1), kaempferol 3-O-α-L-rhamnopyranosyl(1→2)-α-L-rhamnopyranoside (2), hesperetin 7-O-α-L-rham- nopyranosyl(1→6)-β-D-glucopy ranoside (3), 7-bis-(4-hydroxyphenyl)-4E,6E-heptadien-3-one (4), 1,7-bis-(4-hydr- oxyphenyl)-1E,4E,6E-heptadien-3-one (5), 3-hydroxy-4-methoxycinnamic acid (6), p-hydroxybenzaldehyde (7), vanillin (8), 4-hydroxy-3-methlbenzal acid (9), 3-hydroxy-4-methlbenzal acid (10), 4-(1-hydroxy-1-methylethyl)- benzoic acid (11), (R)-6-hydroxy-3-(2-hydroxypropan-2-yl)-6-methy-lcyclohex-2-enone (12), 6,9-dihydroxy-4,7-mega- stigmadien-3-one (13) and β-daucosterol (14). Compounds 1-3, 12 and 13 were isolated from this plant for the first time. Aerial parts of C. longa lacked curcumin derivatives, which are functional components common in the rhizomes.