181705-72-6Relevant articles and documents
Synthesis of diversely functionalized indolizidinones and related bicyclic lactams using intramolecular Grubbs olefin metathesis and Dieckmann condensation
Hanessian, Stephen,Sailes, Helen,Munro, Alexander,Therrien, Eric
, p. 7219 - 7233 (2007/10/03)
Bicyclic 1-aza-2-oxo ring systems with versatile functionality were synthesized from the Grubbs olefin metathesis of appropriate olefinic precursors, starting with L-pyroglutamic acid. The carbocyclization products were further functionalized utilizing th
Lewis acid assisted vinylogous Mannich and Mukaiyama aldol reactions: A route to densely hydroxylated indolizidine alkaloid analogues
Rassu, Gloria,Carta, Paola,Pinna, Luigi,Battistini, Lucia,Zanardi, Franca,Acquotti, Domenico,Casiraghi, Giovanni
, p. 1395 - 1400 (2007/10/03)
The hydroxymethyl-substituted indolizidines 6 and 7, representative members of a ring-B-expanded alexine-australine subclass, are readily accessible by starting with furan-based silyloxydiene 12 and hydroxymethyl hemiaminal 11, through a synthesis sequence involving a scantily exploited vinylogous version of the Mannich reaction. The key iminium electrophilic acceptor 11 is, in turn, available through a vinylogous intermolecular Mukaiyama aldolization process between pyrrole-based silyloxydiene 8 and (S)- glyceraldehyde 9.