140
N. N. Win and H. Morita
washing hair to promote hair growth, and as an expectorant, emetic, and purgative
[1]. In addition, the dried powder of the fruits is utilized as a body scrub in Myanmar.
In Thai folk medicine, the seeds of A. concinna have been used as a therapy for certain
skin diseases, and flavonoids and monoterpenoids have been reported as constituents
of a sample collected in Thailand [2].
Phytochemical studies of the pods of A. concinna in Myanmar were reported in
2000 [3], and the potential of the pods as a natural source of the discovery of cytotoxic compounds was shown for the first time. In addition, this was the first report
in an international journal on the investigation of the chemical constituents of this
species when collected in Myanmar. Three unprecedented new saponins, named
Fig. 2 Structures of 1–4
isolated from the MeOH
extract of Acacia concinna
pods
O
O
OH
O
O
O
CH 2 OH
O
R
O
HO
OH
OH
O
O
OH
O
O
O
HO
OH
OH OH
O
OH
OH
HO
O
O
OH
OH O
O
HO
OH
OH
OH
O
OH
OH
OH
1 (kinmoonoside A) R = X, 6' = R
2 (kinmoonoside B) R = X, 6' = S
3 (kinmoonoside C) R = H
O
OH
O
OH
O
HOH 2 C
OH
X =
O
OH
O
OH
O
HOH 2 C
OH
OH
4 (4-O-[(2E)-6-hydroxy-2-hydroxymethyl-6-methyl2,7-octadienoyl]-D-quinovopyranose)
6'