6-氨基-5-氧代-[1,4]二氮杂烷-1-羧酸苄酯 、
(6E)-6,7,8,9-tetradeoxy-8,8-dimethyl-2-O-methyl-3,5-O-(1-methylethylidene)-gulo-non-6-enonic acid lactone 在
sodium 2-ethylhexanoic acid 作用下,
以
四氢呋喃 为溶剂,
反应 144.0h,
以42%的产率得到benzyl 6-{(R)-2-[(4R,5S,6R)-6-((E)-3,3-dimethylbut-1-enyl)-5-hydroxy-2,2-dimethyl-1,3-dioxinan-4-yl]-2-methoxyacetylamino}-5-oxoperhydro-1,4-diazepine-1-carboxylate