冈田(软海绵)酸

(2R,4a'R,6'R,7'R,8'R,8a'R)-6'-(((tert-butyldiphenylsilyl)oxy)methyl)-8'-(methoxymethoxy)octahydro-3H,3'H-spiro[furan-2,2'-pyrano[3,2-b]pyran]-7'-ol

(((2R,4a'R,6'R,7'R,8'R,8a'R)-7'-(benzyloxy)-8'-(methoxymethoxy)octahydro-3H,3'H-spiro[furan-2,2'-pyrano[3,2-b]pyran]-6'-yl)methoxy)(tert-butyl)diphenylsilane

(2R,4a'R,6'R,7'R,8'R,8a'R)-6'-(hydroxymethyl)-8'-(methoxymethoxy)octahydro-3H,3'H-spiro[furan-2,2'-pyrano[3,2-b]pyran]-7'-ol