7β相关论文
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
Microbial transformation of diosgenin(1)was carried out with the white-rot fungus,Coriolus versicolor.A new polyhydroxyl......
24-Methylenecholest-5-ene-7-oxo-3β,19-diacetate 5 was synthesized starting from stigmasterol via twelve step reactions ......
A new degraded sesquiterpene was isolated from the marine actinomycete Streptomyces sp. 0616208. Its structure was eluci......
本文报道了鸭胆汁中新发现的胆甾酸３α，７α，２３－三羟基－５β－胆甾烷－２４－酸的分子构型转变的研究，通过选择性酰化分子中的３α和２３位羟基，再将７α羟基氧化成......
前文报道了从西沙群岛采集的软珊瑚Nephthea albida和南沙群岛采集的软珊瑚Nephthea tixiexae verseveldt分离到一种罕见的含19-羟......
唇软珊瑚三羟基甾醇腹腔分别注射０．３７４、０．９７８ｍｇ·ｋｇ＾－１，连续７ｄ，较明显地减轻小鼠免疫器官的重量；ＴＭＣ分别腹腔注射０．１６３，０．９７８ｍｇ·ｋｇ＾－１，１ｄ，不影响网状内皮系统对碳粒的廓清......
A new Eremophilanoid sesquiterpene (1) was isolated from the whole plant of Senecio oldhamianus. Its structure was eluc......
6β,7β,14β-Trihydroxy-1α-acetoxy-7α,20-epoxy-ent-kaur-16-en-15-one was isolated from the natural plant of Isodon jap......
卡巴他赛由FDA审核批准上市,临床上用于治疗激素难治性转移性前列腺癌。从结构上看,卡巴他赛是多西他赛7、10-OH甲醚化的衍生物,所......
屈螺酮(Drospirenone),是一种低毒、高效、安全性好的新一代孕激素,最先由德国先灵公司(Schering AG)研究开发。其制备方法和工艺......
目的研究高乌头Aconitum sinomontanum根的化学成分。方法采用硅胶、葡聚糖凝胶Sephadex LH-20、半制备高效液相等色谱技术进行分......
