作者:J. K. Rugutt、F. R. Fronczek、H. H. Yarabe、S. A. Shamsi、C. W. Henry、E. J. Billiot、I. M. Warner
DOI:10.1107/s0108270199001341
日期:1999.5.15
DL-3-[(2,5-Dihydro-3-methyl-2-oxo-5-furyl)oxymethyl ene]-3,3a,6,6a-tetrahydro-2H-cyclopenta[b]furan-2-one, C13H12O5, has relative configurations at the asymmetric C atoms of 3aS, 6aS and 5'R. The dihedral angle formed by the fused cyclopentene and furan rings is 114.81 (5)degrees, and these rings form dihedral angles of 119.53(5) and 67.68 (5)degrees, respectively, with the methylfuranone ring.