CHEMISTRY OF SYNTHETIC RECEPTORS AND FUNCTIONAL-GROUP ARRAYS .6. SYNTHETIC RECEPTORS - 3,6-ANHYDRO-7-BENZENESULFONAMIDO-1,7-DIDEOXY-4,5-O-ISOPROPYLIDENE-D-ALTRO-HEPT-1-YNITOL - A USEFUL COMPONENT FOR THE PREPARATION OF CHIRAL WATER-SOLUBLE CYCLOPHANES BASED ON CARBOHYDRATE PRECURSORS