Pz. Wang et al., Synthetic studies of the HIV-inhibitive spiroketals - Construction of the C(1)similar to C(8) intermediate of didemnaketals, ACT CHIM S, 58(4), 2000, pp. 458-463
A synthetic procedure for construction of the C(1) similar to C(8) intermed
iate of the HIV - inhibitive didemnaketals starting from the natural L - (-
) - menthone was developed, in which two chiral intermediates (3S, 5R, 6S)
and (3S, 5R, 6R) - 3 - methyl - 5, 6 - dihydroxy - acetonide - 7 - oxo - oc
toate were synthesized, each involved the construction of two extra chiral
centers.