三光气 、 N-((5S,6S,7S,8R,9R)-8-amino-6-azido-9-hydroxy-2,2,9-trimethyl-8-((S)-1-(triisopropylsiloxy)ethyl)-1,3-dioxaspiro[4.4]nonan-7-yl)-4-nitrobenzenesulfonamide 在
3-acetylphenylboronic acid neopentyl glycol ester 作用下,
以
二氯甲烷 为溶剂,
以100%的产率得到(3aR,4R,5S,6S,6aS)-6-Azido-4-hydroxy-2',2',4-trimethyl-1-((4-nitrophenyl)sulfonyl)-3a-((S)-1-(triisopropylsiloxy)ethyl)tetrahydro-1H-spiro[cyclopenta[d]imidazole-5,4'-[1,3]dioxolan]-2(3H)-one