9.44
[]. Roland Weisser, et al. Enantioselective synthesis of furo[2,-b]furans, a spongiane diterpenoid substructure. Org Lett. 25 Nov 24;7(24):55-6.
H227-H-H2-H5-H9-H5
P2-P26-P264-P27-P27-P28-P2+P52-P4+P4-P-P62+P64-P7+P78-P4-P45-P5
GHS6
6.
28
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