Abstract
The efficient and selective cross‐metathesis (CM) of both the α‐ and β‐anomers of C‐allyl‐glucose and N‐acetyl‐C‐allyl‐glucosamine with electron‐deficient olefins is reported. The applicability of our CM approach in the synthesis of glycoside‐conjugates is illustrated by the CM of α‐C‐allyl‐glycosamine 2 with uridinyl vinylphosphonate 22, to produce UDP‐GlcNAc analog 23.