| Allium is placed in Allieae of Liliaccae, and this genus contains hundreds of distinct species, most of which have been verified edible and medicinal. Many bioactive compounds such as sulfur compounds, steroidal saponins, flavonoids, organonitrogen compounds and some other compounds were isolated from the plants of this genus. Sulfur compounds, which mainly contains in the volatile oil, give a characteristic onion or garlic taste and odor. Lots of plants in Allium possess many beneficially biological properties such as antibacterial activity, preventing blood platelet conglomeration activity, anti-tumor activity, antioxidant activity and inhibite cAMP phosphodiesterase activity. The bioactive constituents and pharemacological functions of Allium sativum, Allium cepa, Allium mongolicum Regel, Allium Tuberosum were introduced in the first chapter of this paper.To our knowledge, no phytochemical investigation of the roots of Allium Tuberosum has been undertaken. In the second chapter of this paper, the chemical constituents of Allium Tuberosum roots were studied. Fifteen compounds, including two new compounds (1,2),were isolated from the ethyl acetate extracts of this plant on the basis of silica chromatography, gel filtration chromatography and high-performance liquid chromatography. By NMR,IR and MS technologies, their structures were determined as4,8-dihydroxyacetophenone-8-O-ferulate (1),(E)-8,11,12-trihydroxy-9-octadecenoate (2),(E)-8,11,12-trihydroxy-9-octadecenoate (3), tianshic acid (4),(E)-1-allyl-2-(3-(allylsulfonyl)prop-1-en-1-yl)disulfane (5),3,4,5-trimethoxybenzoic acid (6),3,4,5-trimethoxycinnamic acid (7),3,4-dihydroxyacetophenone (8),4,8-dihydroxyacetophenone (9), buddlenol D (10), daucosterol (11), linoleic acid (12),1-hexadecanol(13),1-octadecanol (14),(3-sitosterol (15). It is worthy to note that compounds3,6,7,8,9,10were isolated from Allium for the first time. At the same time,29volatility compounds were detected by GS/MS. |
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