Versatile enantiocontrolled synthesis of (+)-fostriecinElectronic supplementary information (ESI) available: experimental section. See http://www.rsc.org/suppdata/cc/b2/b209742g/
Fostriecin, a potent protein phosphatase inhibitor and antitumor agent, has been enantioselectively synthesized in naturally occurring form via a versatile route, which also allows one to secure all possible stereoisomeres of the C1–C13 fragment including the C11 stereocenter and the geometry of the Δ12-double bond.
(+)-Fostriecin and (+)-phoslactomycin B, which are potent and selective inhibitors of protein phosphatase, were synthesized by a highly enantio- and stereoselective approach that enabled us to prepare all possible isomers at both the C11 secondary alcohol position and the ι²-double bond.
Stereoselective Synthesis of the Octahydronaphthalene Unit of Integramycin via an Intramolecular Diels−Alder Reaction
作者:Thomas A. Dineen、William R. Roush
DOI:10.1021/ol050191g
日期:2005.3.1
[reaction: see text] The racemic cis-decalin core fragment 30 of integramycin was synthesized by a sequence involving a highly diastereoselective intramolecularDiels-Alderreaction of triene 24. A remarkable switch in stereoselectivity occurred upon changing the dienophile unit of 24 from (Z)- to (E)-geometry.