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This thesis consists of four chapters. Chapter Summary (Ericaceae), Ericaceae the Lie wood subfamily (Andromededoideae) the diterpenoid the chemical composition and biological activity of the second chapter of the progress; chemical composition of the United States Lima andromeda (Pieris formosa D.Don) more system research; Chapter is a summary of a systematic study of the chemical composition of gold leaf (Craibiodendron yunnanense WWSmith); fourth chapter of this thesis, the work done by the Li wooden Ericaceae subfamily plant diterpenoids natural alkaloid toxins is very compelling, these ingredients has been determined mostly the 5/7/6/5 wooden veratridine Diterpenoid compounds such substances Ericaceae found. The biological activity studies have shown the wood veratridine such Diterpenoid great potential value. In the early 1950s, downtown sheep spend Ericaceae (Rhododendron molle G. Don) seeds 8.5% hemp (they are the traditional Chinese medicine) has been extensively studied, isolated from wood veratridine alkanes terpenes, pharmacological experiments show that its lower blood pressure, dilates blood vessels, muscle spindle excited, slow down the heart rate and polarization activation of plasma membrane role. In order to find novel structure and potentially biologically active compounds were further from the plants, we Lima drunk Konoha collected from Yunnan Wuliangshan and gold leaf purchased from Yuxi City, Yunnan Province, and pharmaceutical chemical composition of the cotyledons system research. Through the integrated use of various chromatographic methods and modern spectroscopic techniques, 30 compounds were isolated and identified from the above two Li wooden Subfamily. Structure type involving diterpenes, triterpenes, flavonoids, aromatic small molecules and steroid. From the separation of the United States Lima andromeda Chinese Communists get 17 compounds, including new compounds 1 Ge, are named: the United States Lima drunk lignin E (pierisformosin E); known compounds identification for: pierisformosin M (2), pierisformosin L (3), grayanotoxin -XVIII (4), grayanotoxin-Ⅱ (5), ursolic acid (6), betulinic acid (7), 2 ',4-dihydroxy-4'-methoxy-6'-O-β-glucopyranoside dihydrochal-cone (8 ), phloridzin (9), phloretin (10) ,3-hydroxy-phloridzin (11), catechin (12), epicatechin (13), epicatechin-(2β → O → 7,4 β → 8)-ent-epicatechin (14 ), bis-8, 8'-catechiny-lmethane (15), β-sitoserol (16), daucosterol (17). Except compounds 2,3,4,13,16 and 17, the remaining compounds are isolated from this plant for the first time. 13 compounds were isolated from the gold leaf, are known compounds. Which includes eight two terpene, respectively, were identified as: grayanotoxin Ⅲ (1), rhodomollein Ⅱ (2), asebotoxin Ⅲ (3), asebotoxin Ⅰ (4), grayanotoxin Ⅹ VIII (5), pierisformosin A (6), grayanotoxin Ⅱ (7), arichannatoxin Ⅰ ( 8); 3 aromatic small molecule, was identified as 4-hydroxybenzeneethanol (9), (Z)-p-hydroxy cinamic acid (10), (E)-p-hydroxy cinamic acid (11); 2 steroidal were identified as the β-sitoserol (12) and daucosterol (13). Except compound the 3,5,10,11,12 and a 13, and the remaining compounds were first isolated from the plants get.
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