1',2'-SECOTHYMIDINES. THE PREPARATION OF 2,3'-ANHYDRO DERIVATIVES AND THE FORMATION OF TWO UNUSUAL DIMERIC PRODUCTS

Starting with the functionalized butanetetrols and -triols derived from D-isoascorbic acid, 1',2'-seco nucleoside tosylates were prepared. While attempts to form the 2,3'-anhydro derivatives were successful, no 2,2'-anhydro analogues could be obtained even under a variety of reaction conditions