2-Isopropyl-5-methylcyclohexyl

Synthesis of (2S, 4S, 5S)-5-(t-Butoxycarbonylamino)-4-(t-Butyldimethylsilyloxy)-2-Isopropyl-7-Methyl Octanoic Acid

In an effort to produce renm mhibttory peptides, the preparation of (2 S ,4 S ,5 S )-5-( t -Butoxycarbonylamino)-4-( t -butyldimethylsilyloxy)-2-isopropyl-7-methyl octanotc acid, 15 , was carried out ( 1 ). This pseudo-dipeptide was used

Synthesis of (2R, 3R, 4R, 5S)-5-tert-Butyloxycarbonylamino-3,4-Dihydroxy-2-1sopropyl-3,4-O,O-Isopropylidene-6-CyctohexyI-Hexanoic Acid

The dipeptidic dihydroxyethylene isostere (27, 3R , 4R , 5S )-5-tert -butyloxy-carbonylamino-3,4-dihydroxy-2-isopropyl-3,4-O,O -isoprop-ylidene-6-cyclohexyl-hexanoic acid, 15 , is a representative building block of an important class

多肽的基本常识

-5(4H)-oxayolne中间体的形成， 在Carbodiimidie和tertiany amines存在时重排， 还有， 不是所有的Fmoc 对称酐都溶于ＤＣＭ，或者无论所有试剂如何都不溶。   对称酐的另一种改变是混合酐，Carboxglic-Carbonate或Ｃarboxglic-phosphinic混合酐， 典型的情况且是， 由活性isobutyl-或isopropyl-choroformate制备这些， 用Nox被阻氨基酸代替