diisopropyl (2,3-dideoxy-5-O-dimethoxytrityl-3-aza-4acarba-β-D-glycero-pentofuranos-3-ylmethyl)phosphonate 、
甲基磺酰氯 在
吡啶 作用下,
以
二氯甲烷 为溶剂,
以81%的产率得到diisopropyl (2,3-dideoxy-5-O-dimethoxytrityl-1-O-methanesulfonyl-3-aza-4a-carba-β-D-glycero-pentofuranos-3-ylmethyl)phosphonate