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- W1992583846 abstract "Abstract Four peptidomimics ( 3 – 6 ) containing the cis ‐ DKP‐1 or trans ‐ DKP‐2 scaffolds and either L ‐Pro or D ‐Pro were synthesized. DKP‐1 and DKP‐2 are bifunctional diketopiperazines formally derived from the head‐to‐tail cyclization of L ‐aspartic acid and either ( R )‐ or ( S )‐2,3‐diaminopropionic acid, which feature aminomethyl and carboxymethyl side arms in the 3‐ and 6‐positions of the 2,5‐piperazindione ring. Peptidomimics ( 3 – 6 ) were tested as organocatalysts in the conjugate addition of several aldehydes to β‐nitrostyrene and ( E )‐2‐(furan‐2‐yl)nitroethene with good to excellent diastereo‐ and enantioselectivities. Monte Carlo/Energy Minimization (MC/EM) conformational searches were performed on the four catalysts and their enamine derivatives with propanal to rationalize the observed stereoselectivity." @default.
- W1992583846 created "2016-06-24" @default.
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- W1992583846 date "2011-08-23" @default.
- W1992583846 modified "2023-09-27" @default.
- W1992583846 title "Bifunctional 2,5‐Diketopiperazines as Efficient Organocatalysts for the Enantioselective Conjugate Addition of Aldehydes to Nitroolefins" @default.
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- W1992583846 doi "https://doi.org/10.1002/ejoc.201100794" @default.
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