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Two new phenylpropanoid glycosides, a-L-rhamnopyranosyl-(1→3)-1-O-caffeoyl-β-D-glucopyrano-side and 2",3"'-diacetyl acteoside, together with seven known compounds have been isolated from the parasitic plant, Aeginetia indica Linn. Their structures were established by spectroscopic and chemical methods.

Two new compounds have been isolated from the whole plant of Monochoria vaginalis and characterized as: (10Z)-1-(2,6-dihydroxyphenyl)octadec-10-en-1-one (1) (20R, 24R)-campest-5-ene-3β, 4β-diol (2) together with nine known ones. The structures of these compounds were elucidated on the basis of spectral data and chemical evidence.

Two new neolignans, namely balanophonin 4-O-β-d-glucopyranoside and aegineoside together with four known neolignans have been isolated from the whole plant of Aeginetia indica Linn. (Orobanchaceae). Their structures were established by spectroscopic and chemical methods.

Two new flavonoids, kaempferol 7-O-(2-E-p-coumaroyl-alpha-l-rhamnoside) (1) and kaempferol 7-O-(2,3-di-E-p-coumaroyl-alpha-l-rhamnoside) (2), together with 10 known compounds were isolated from the flowers and fruit of Tetrapanax papyriferus. Compounds 1 and 2 showed cytotoxicity by brine shrimp lethality bioassay with LC(50) values of 0.57 and 0.40 mM, respectively.

From the whole plant of Cassytha filiformis Linn. (Lauraceae), two new neolignans, named 4-O-methylbalanophonin and cassyformin together with three known compounds have been isolated. Their structures were established by spectroscopic and chemical methods.

Four oleanane-type triterpenes, 3alpha,21beta,22alpha-trihydroxy-11,13(18)-oleanadien-28-oic acid (1), 3-epi-papyriogenin C (2), 21-O-acetyl-21-hydroxy-3-oxo-11,13(18)-oleanadien-28-oic acid (3) and 3beta-hydroxy-21-oxo-11,13(18)-oleanadien-28-oic acid methyl ester (4), together with four known triterpenes, were isolated from Tetrapanax papyriferus (Hook) K. Koch. Papyriogenin A (8) exhibited anti-HIV activity and low cytotoxicity in acutely infected H9 lymphocytes. Their structures were determined by analysis of spectroscopic data, including by 1D and 2D NMR.

A new 4α-methylsterol, violasterol A, with three known flavonoids-luteolin, luteolin 7-O-β-D-glucoside and tricin-were isolated from ethanolic extract of whole plants of Viola formosana. The structure of vioiasterol A was assigned to be (22E)-4α-methyl-24ξ-isopropenyl-5α-cholesta-7, 22-diene-3β-ol (1) on the basis of spectral and chemical evidence.

Aus den Rhizomen von Woodwardia orientalis Sw. wurden eine Reihe von Phytosterin-Derivaten (freie Sterine, Sterin-Ester, Sterin-Glucoside, veresterte Sterin-Glucoside) und eine neue Triterpen-Verbindung, die wir Woodwardinsaure nannten, isoliert. Die Struktur der Woodwardinsaure wurde als 3β-Hydroxy-21β-H-Δ22(29)-hopen-23-carbonsaure aufgeklart.