N-[1(S)-(cyclohexylmethyl)-2(R),3(S)-dihydroxy-5-methylhexyl]-2(R)-(cyclopropylmethyl)-3(S),5(S)-dihydroxy-3,5-O-isopropylidene-6-phenylhexanamide 在
Amberlite IR-120 (H
+) 作用下,
以
甲醇 、
水 为溶剂,
以100%的产率得到N-[1(S)-(cyclohexylmethyl)-2(R),3(S)-dihydroxy-5-methylhexyl]-2(R)-(cyclopropylmethyl)-3(S),5(S)-dihydroxy-6-phenylhexanamide