Preparation of tritylated 1,2-0-(1-methoxycarbonyl)ethylidene derivatives of carbohydrates and their conversion into tritylated 1,2-0-(1-cyano)ethylidene derivatives
Preparation of tritylated 1,2-0-(1-methoxycarbonyl)ethylidene derivatives of carbohydrates and their conversion into tritylated 1,2-0-(1-cyano)ethylidene derivatives