(+)-trans-2, 5, 6-trimethyl-l-cyclohexene-l-carbaldehyde (1) which is shown to have the (5S, 6R)-configuration by chemical correlation with (+)-(2R, 3S, 6S)-2, 3, 6-trimethylcyclohexanone. The absolute configurations are therefore (2R, 5R, 9S, 10R) for (+)-dactyloxene-B and (2R, 5S, 9S, 10R) for (+)-dactyloxene-C.
天然的(+) - dactyloxene-B (12)和-C (13)已经合成从(+)起始-反式-2,5-,6-三甲基-1-
环己烯-1-
甲醛(1) ,其被示出为通过与(+)-(2 R,3 S,6 S)-2,3,6-三甲基
环己酮的
化学相关具有(5 S,6 R)-构型。因此,对于(+)-
己二烯-X-B,绝对构型为(2 R,5 R,9 S,10 R),对于(+)-二烯基-氧烯-C为(2 R,5 S,9 S,10 R)。