*^\*^,0*R*^\*^,0a*R*^\*^)-0,0a-dihydroxy-0-methyl-0-(allyldisulfanyl)tetrahydro-0*H*-difuro\[0,0-*b*:0′,0′-*c*\]furan-0(0a*H*)-one and (0*S*^\*^,0a*R*^\*^,0a*S*^\*^,0*R*^\*^,0*S*^\*^,0a*R*^\*^)-0,0a-dihydroxy-0-methyl-0-(allyldisulfanyl)tetrahydro-0*H*-difuro\[0,0-*b*:0′,0′-*c*\]furan-0(0a*H*)-one, respectively.  ######   ^0^H NMR and ^00^C NMR data of **0**.    **Position**   **0**                                                                  -------------- ---------------------------- ------- ------------------------------ -------   0              0.00 (dd, *J* = 0.0, 00.0)   00.0    α 0.00 (dd, *J* = 0.0, 00.0)   00.0                  0.00 (dd, *J* = 0.0, 00.0)           β 0.00 (dd, *J* = 0.0, 00.0)      0              0.00 (m)                     00.0    0.00 (m)                       00.0   0a             0.00 (