Stereodivergent Synthesis of Carbasugars from d-Mannose. Syntheses of 5a-Carba-α-d-allose, β-l-Talose, and α-l-Gulose Pentaacetates - Gómez, Ana M; Moreno, Eduardo; Valverde, Serafín; López, J Cristóbal (Synlett, 2002)