| Summary: | 碩士 === 中原大學 === 化學研究所 === 100 === Rhinacanthus nasutus, Acanthaceae plant, mainly in mainland China such as Guangxi, Guangdong, Hainan, Yunnan and Taiwan, Southeast Asia. Cultivation, also wild moist environment in the hills or wasteland, roadside, river place.
Its sweet and slightly bitter, slightly cold, lungs pathogenic fire, insecticidal antipruritic efficacy. Early for tuberculosis, tinea, eczema, skin pruritus embolism. In recent years, Taiwan's medical experts in Rhinacanthus nasutus tea drinking have a good effect on blood pressure, diabetes, arteriosclerosis, insomnia, constipation, and women's physiological regulation.
The leaves were freshly harvested from Rhinacanthus nasutus. After cleaning and immedately air-dried, the leaves were steam-distilled for essential oils. The essential oils in the distillate were then solvent extracted before treatment with base to remove acidic compounds. The slightly brown neutral essential oil mixture was separated and purified by column chromatography.
The oil mixture was chromatographed into hydrocarbon and oxygenated fractions that were analyzed for the chemical components by gas chromatography(GC) equipped with a flame ionization detector(FID) and mass spectrometer detector(MS), Fourier Transform infrared spectrometer(FT-IR), and nuclear magnetic resonance spectrometer(NMR). In the oxygenated fraction, (Z)-hex-3-en-1-ol, benzaldehyde, 2-phenylethanol,3,5,5-trimethylcyclohex-2-enone, m-tolylmethanol, 2,3-dihydrobenzofuran, 2,6,6-trimethylcyclohexa-1,3-dienecarbaldehyde, (Z)-2-phenylbut-2-enal, (E)-1-(2,6,6-trimethylcyclohexa-1,3-dien-1-yl)but-2-en-1-one, (E)-4-(2,6,6-trimethylcyclohex-2-en-1-yl)but-3-en-2-one, (E)-4-(2,6,6-trimethylcyclohexa-1,3-dien-1-yl)but-3-en-2-one, (E)-4-(buta-1,3-dien-1-yl)-3,5,5-trimethylcyclohex-2-enone, pentadecan-2-one, 6,10,14-trimethylpentadecan-2-one, methyl palmitate, isophytol, (9E,12E,15E)-octadeca-9,12,15-trien-1-ol, phytol, 2,2-dimethyl-3,4-dihydro-2H-benzo[g]chromene-5,10-dione, 2-methylanthracene-9,10-dione, (2Z,6E,10E)-3,7,11,15-tetramethylhexadeca-2,6,10,14-tetraen-1-ol were identified.
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