Studies on Chemical Constituents of the Fermentation Liquor of Soil Fungus 07-11

Two compounds were isolated from ethyl acetate extract of the fermentation of fungus 07-11, which obtained from the soil of Yunnan Province. They were identified as N-(4-hydroxy-2-methoxyphenyl) acetamide (1) and ergosta-7,22-diene-3,6-dione (2) respectively on the basis of spectral analyses and physical and chemical identifications. Compound 1 was a new natural product. Compound 2 was firstly isolated from its genus. Spectral data of 1 and complete 1H NMR data of 2 were reported for the first time.

Synthesis and biological evaluation of ^(99m)Tc-HEDTA/HYNIC-MPP4 complex for 5-HT1A receptor imaging

5-HT1A receptor is associated with a variety of pathophysiology of neuropsychiatric disorders. Accordingly, we have synthesized a new 5-HT1A receptor ligand (HYNIC-MPP4) and labeled it with 99mTc using N-(2-hydroxyethyl)ethylenediaminetriacetic acid (HEDTA) as coligand. 99mTc-HEDTA/HYNIC-MPP4 was prepared under pH 6 at room temperature. Biodistribution of 99mTc-HEDTA/HYNIC-MPP4 in normal mice showed that this complex had moderate brain uptake (0.60% ID·g-1 at 2 min p.i.) and good retention. The hippocampus had the highest radioactivity uptake at 2 min p.i. (1.84% ID·g-1). The ratio of Hipp/CB was 3.1 at 2 min p.i. and increased to 4.4 at 60 min p.i. After blocking with 8-hydroxy-2-(dipropylamino) tetralin, the uptake of hippocampus was decreased significantly from 1.84% ID·g-1 to 0.53% ID·g-1 at 2 min p.i., while the cerebellum had no significant decrease. This 99mTc complex could be a potent agent for 5-HT1A receptor imaging.

铁皮石斛醋酸乙酯部位化学成分研究

目的进一步研究铁皮石斛Dendrobium officinale活性醋酸乙酯部位的化学成分。方法运用大孔树脂、MCI、硅胶、凝胶(Sephadex LH-20)、ODS等柱色谱、制备薄层色谱及制备高效液相色谱法等分离技术,进行化合物的分离纯化,根据^(1)H-NMR、^(13)C-NMR、MS等波谱数据和理化性质鉴定化合物的结构。结果从铁皮石斛乙醇提取物的醋酸乙酯部位分离得到了34个化合物,分别鉴定为moscatin(1)、黑麦草内酯(2)、柚皮素(3)、橙皮苷(4)、甘草素(5)、2-(4-hydroxy-3-methoxyphenyl)-3-(2-hydroxy-5-methoxyphenyl)-3-oxo-l-propanol(6)、异甘草素(7)、(E)-4-hydroxycinnamic acid(8)、(Z)-4-hydroxycinnamic acid(9)、coniferyl p-coumarate(10)、sinapyl p-coumarate(11)、tinosporaic acid A(12)、N-trans-coumaroyltyramine(13)、N-trans-feruloyltyramine(14)、丁香脂素(15)、pinoresinol(16)、梣皮树脂醇(17)、lirioresionol(18)、2(5H)-Furanone 5-hydroxy-3,4-dimethyl-5-pentyl(19)、丁香酸(20)、十六烷酸(21)、对羟基苯甲酸(22)、对羟基苯甲醛(23)、阿魏酸(24)、二氢松柏醇(25)、十七烷(26)、4-羟基-3,5-二甲氧基反式肉桂醛(27)、dihydro-p-cinnamic acid(28)、(+)-(4S)-(2E)-4-羟基-2-壬烯酸(29)、1,3-benzenediol(30)、对羟基苯酚(31)、水杨酸(32)、对羟基苯乙酮(33)和香草醛(34)。结论化合物2首次从石斛属植物中分离得到,化合物3~7均为首次从铁皮石斛中分离得到。