4-(1-Ethyl-1H-benzimidazol-2-y

Determination of Sulfur Amino Acids, Glutathione, and Related Aminothiols in Biological Samples by Gas Chromatography with Flame Photometric Detection

. Although GC method based on the preparation of N-heptafluorobutyryl isobutyl or ethyl esters (8 ) is selective and sensitive by flame photometric detection (FPD), this method is not applied to the analysis of biological samples. As the HPLC methods

Two‐Step, One‐Pot Synthesis of Inosine, Guanosine, and 2′‐Deoxyguanosine O6‐Ethers via Intermediate O6‐(Benzotriazol‐1‐yl) Derivatives

for the etherification at the O 6 ?position of silyl?protected inosine, guanosine, and 2??deoxyguanosine is described. Typically, a THF solution of the silylated nucleoside is treated with 1H ?benzotriazol?1?yloxy?tris(dimethylamino)phosphonium hexafluorophosphate (BOP

多肽制备

%哌啶DMF溶液1次5min3DMF1次30s4含20%哌啶DMF溶液1次10min5DMF6次30s6Fmoc-AAFHBTUHPBtNMM151次30-60min7DMF2次30sHBTU: 2-(1H-Benzeotriazole-1-yl)-1,1,3,3,-tetramethyluroniumhexafluorophosphateHOBt: N-Hydroxybnzotrizole•H2ONMM: N-methylmorpholine2． 从树脂上分离下来：步骤溶液或溶剂循环数时间1DMF