1-β-O-Glycopyranosyl carbamates are prepared with practically 100% β-diastereoselectivity from anomerically unprotected glycopyranosides and isocyanates. The isocyanates are prepared in situ from carboxylic acids via acyl azides.
1-β-O-Glycopyranosyl carbamates 是通过在几乎 100% β-对映选择性下,从无保护的α-糖苷和
异氰酸酯制备的。
异氰酸酯则是由
羧酸通过酰基
叠氮化物原位制备得来的。