An efficient Ugi-3CR/aza Diels–Alder/Pomeranz–Fritsch protocol towards novel aza-analogues of (±)-nuevamine, (±)-lennoxamine and magallanesine: a diversity oriented synthesis approach?

Organic & Biomolecular Chemistry Pub Date: 2016-12-20 DOI: 10.1039/C6OB02572B

Abstract

A rapid and efficient synthesis of a series of (±)-nuevamine, (±)-lennoxamine and magallanesine aza analogues is described. The synthetic strategy involves Ugi-3CR and two further condensation processes, aza-Diels–Alder cycloaddition and the Pomeranz–Fritsch reaction. The variation of the chain-size in aldehyde moieties provided structural diversity in only two operational reaction steps.

Graphical abstract: An efficient Ugi-3CR/aza Diels–Alder/Pomeranz–Fritsch protocol towards novel aza-analogues of (±)-nuevamine, (±)-lennoxamine and magallanesine: a diversity oriented synthesis approach
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