Tetrahedron Letters p. 8319 - 8322 (1995)
Update date:2022-08-11
Topics:
Asenjo, Pablo
Farina, Francisco
Martin, M. Victoria
Paredes, M. Carmen
Soto, J. Javier
2-sulphur-substituted 1,4-anthraquinones 8a,b and 10 have been prepared by annelation reactions of the anions of furanones 5a,b with naphthoquinone monoketals of type 6 and 9.Diels-Alder reaction of the 1,4-anthraquinones 11a,b with (E)-1,3-bis(trimethylsilyloxy)buta-1,3-diene (12) affords ABCD tetracyclic systems related to those existing in anthracyclinones.
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