见血飞化学成分的研究 I

从见血飞根茎的乙醇提取物中的脂溶性部分, 分得6个化合物, 它们经鉴定为pimpincollin(1), toddaloactone(2), 5-hydroxy-4,8-dimethoxy-furoquinoline(3),skimmianino(4), isopimpinellin(5)和11-acetonyl-dihydronitidine(6), 其中3,6为新生物碱。     

Oxypregnane-oligoglycosides from the Stems of Stephanotis mucronata （Asclepiadaceae）

Four new oxypregnane-oligoglycosides, mucronatosides A (1), B (2), C (3), and D (4),together with one known stephanoside E (5) were isolated from the stems of Stephanotis mucronata (Blanco) Merr.. Their chemical structures were determined on the basis of chemical and extensive spectroscopic methods including one-dimensional and two-dimensional NMR.     

A New Tetranortriterpenoid from Munronia delavayi

A tetranortriterpenoid, named munronin G, was isolated from Munronia delavayi （Meliaceae） by chromatography. Its structure was determined on the basis of 1D-, 2D-NMR and mass spectral analyses.     

明党参、峨参光合与生长的研究

明党参和峨参具相似的光合特征：3月的光合速率、光饱和点及光补偿点均大于1月；光合强度接近；对冬季至早春的光利用能力较强，而对春夏的强光都不能充分利用．明党参的比叶面积(SLA)、叶面积比(LAR)、叶生物量比(LMR)均低于峨参，光合持续时间比峨参短160d左右．两种植物的株高、冠幅、最大带柄叶长和叶片数均在早春的3、4月份迅速增大，进行旺盛营养生长，明党参的4个生长指标均低于峨参，明党参总光舍量远低于峨参，物质积累及生长较峨参缓慢，生殖投入低，生活史长，种群受到干扰后不易迅速恢复，     

Two New Lignans from Taxus yunnanensis

The phytochemical investigation on the ethanolic extracts of the barks of Taxus yunnanensis (Taxaceae) led to the isolation of two new neo-lignans, named taxuyunins A (1) and B (2), along with the known diterpenolignan, brevitaxin (3). Their structures were elucidated on the basis of spectroscopic and chemical evidences. Compound 1 is a neo-lignan xyloside while compound 2 belongs to the rare neo-lignan possessing a ramified C3 side chain.     

A New Poly Brominated Dibenzylphenol from Rhodomela confervoides

A new poly brominated dibenzylphenol named as rhodomevoidin was isolated from Rhodomela confervoides. Its structrue was elucidated as 3-bromo-4, 5-bis (2, 3-dibromo-4, 5-NMR techniqueshol by spectroscopic methods including IR, HRFABMS, ID and 2D NMR techniques.     

囧版三国之烧烤之行

正周瑜呀,对面开了家寒国烧烤店,全家优惠价80两银子,很实惠。我的天呀,这么贵?等我拿了工资再说吧……老土,比隔壁老营还小气。诸葛兄今天是不是来请我吃最流行的烧烤呀?流行?你OUT了!什么意思?现在都流行到野外去自己烧烤。哦,你是说自己买东西去烧烤?对呀,不会被商家骗钱,还能享受野外的新鲜空气。现在我们就一起去?好呀,连春游也一起算进去了!夫人意下如何?好呀,这样孩子也可以去玩!自助烧烤,省下一大笔钱,嘿嘿!今天就烤鱼吧!看这鱼多新鲜。我们人多,买5条,你买3条差不多了。     

钞票漫游之旅

正我们使用的钞票是由中国人民银行发行的。发行钞票的银行被称为"发钞银行"。发钞银行的钞票都由印钞公司印制。印钞公司采用一种附有水印及金属保安线的特制纸张,配合精密的印刷技术,在大张印纸上印制出大量钞票。