26013-17-2Relevant articles and documents
Photocyclization of enamides. XXXII. Alkaloid synthesis using furopyridone as a synthon: Synthesis of key intermediates for the synthesis of (±)-quinine, (±)-ajmalicine, and (±)-7-demethyltecomanine
Naito,Miyata,Kida,Namoto,Ninomiya
, p. 2419 - 2423 (2007/10/02)
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CLAISEN-REARRANGEMENT-MEDIATED RING CONTRACTION OF MACROCYCLIC LACTONES A NEW APPROACH TO CARBOCYCLES AND HETEROCYCLES
Funk, Raymond L.,Abelman, Matthew, M.,Munger, John D.
, p. 2831 - 2846 (2007/10/02)
Macrocyclic ketene acetals 3 undergo Claisen rearrangements smoothly and constitute a viable and general approach to hetero- or carbocyclic ring systems 4.This novel ring contraction process is subject to high internal asymmetric induction (cf. lactones 7 -> carbocycles 8) as well as relative asymmetric induction in the rearrangements of ketene acetals derived from lactones 18, 23 and 27.Finally, N-benzoylmeroquinene methyl ester (37) was prepared to demonstrate the potential of this methodology in heterocycle synthesis.
1,6-dihydro-3(2H)-pyridinones. VIII. Total synthesis of (±)-corynantheidol and formal synthesis of (±)-quinine
Imanishi,Inoue,Wada,Hanaoka
, p. 1551 - 1560 (2007/10/02)
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