Tetrahedron p. 7525 - 7538 (1998)
Update date:2022-08-04
Topics:
Mal, Dipakranjan
Bandhyopadhyay, Mousumi
Datta
Murty, Kadiyala V. S. N.
The surfoxide esters 14 and 20d are successfully annulated with bicyclic enone 8 in the presence of (t)BuOLi to provide the pentacyclic ketones 9a and 21a respectively in good yields (≤70%). Flash vacuum pyrolysis of O-methyl derivatives 9b and 21b at - 5000 C/. 1 mm provide furoindacenones 16b and 22b respectively, which in turn are convertible to furocoumarins 1 and 3.
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Doi:10.1021/ic3014927
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(1998)Doi:10.1016/S0008-6215(97)10111-2
(1998)Doi:10.1016/j.bmc.2012.02.050
(2012)Doi:10.1016/S0022-328X(97)00697-9
(1998)
