benzyl 2(R)-<5(R)-formyl-3(R)-methyl-5-<5(R)-(methoxymethoxy)-6(R)-methyl-2(S)-tetrahydropyranyl>-2(R)-tetrahydrofuryl>butyl ether

benzyl 2(R)-<5(R)-carbomethoxy-3(R)-methyl-5-<5(R)-(methoxymethoxy)-6(R)-methyl-2(S)-tetrahydropyranyl>-2(R)-tetrahydrofuryl>butyl ether

benzyl 2(R)-<5(R)-carbomethoxy-3(R)-methyl-5-<5,6-dihydro-5(R)-(methoxymethoxy)-6(R)-methyl-2(S)-pyranyl>-2(R)-tetrahydrofuryl>butyl ether

benzyl 2(R)-<5(R)-ethyl-3(R)-methyl-5-<5(R)-hydroxy-6(R)-methyl-2(S)-tetrahydropyranyl>-2(R)-tetrahydrofuryl>butyl ether

benzyl 2(R)-<5(R)-ethyl-3(R)-methyl-5-<5(S)-ethyl-5-hydroxy-6(R)-methyl-2(S)-tetrahydropyranyl>-2(R)tetrahydrofuryl>butyl ether