(1R,3R,5S,6R)-3-(4-methoxybenzyl)-oxy-8-oxa-bicyclo<3.2.1>octan-6-ol

(1R,5R,7R)-7-(4-methoxybenzyl)-oxy-2,9-dioxa-bicyclo<3.3.1>nonan-3-one

(1R,3R,5S)-3-(4-methoxybenzyl)-oxy-8-oxa-bicyclo<3.2.1>octan-6-one