排序方式: 共有6条查询结果,搜索用时 0 毫秒
1
1.
The applicability of liposomes as drug carriers for the topical route of administration was investigated using triamcinolone as a model drug. The liposomal encapsulation favourably altered the drug dipposition; the concentration of the drug decreased at the site of its adverse effects and increased at the site where its activity is desired. 相似文献
2.
3.
The properties of phospholipase enzymes in staphylococcal toxins 总被引:24,自引:0,他引:24
H M Doery B J Magnusson J Gulasekharam J E Pearson 《Journal of general microbiology》1965,40(2):283-296
4.
5.
The 13C-n.m.r. spectra of 19 2-phenyl-1,3-dioxolane, -1,3-dioxane and -1,3-dioxopane derivatives were examined and it was found that both the 13C-n.m.r. chemical shift for the acetal carbon atom and the one-bond coupling constant between the acetal carbon atom and the acetal proton had values that could be used to distinguish between acetals having different ring sizes. In addition, the presence of axial substituents at positions 4 or 6 in substituted 2-phenyl-1,3-dioxane rings and 4 or 7 in substituted 2-phenyl-1,3-dioxepane rings could be readily detected. The structures of a number of carbohydrate examples were determined by using these two parameters and also the chemical shift of the acetal proton from 1H-n.m.r. spectra. The use of all three parameters made assignment of benzylidene acetal ring-size unambiguous. 相似文献
6.
1