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- W2013291805 abstract "High levels of diastereoselectivity are observed for benzylation of the lithium enolates of (S)-N,N′-bis-para-methoxybenzyl-3-iso-propyl-piperazine-2,5-dione, (S)-N(1)-para-methoxybenzyl-N(4)-methyl-3-iso-propyl-piperazine-2,5-dione and (S)-N(1)-methyl-N(4)-para-methoxybenzyl-3-iso-propyl-piperazine-2,5-dione. These data suggest that the high diastereofacial selectivity observed for alkylation of these diketopiperazine templates is mainly a consequence of the relay of stereochemical information from C(3) to C(6) via the influence of 1,2-torsional strain introduced by the N-alkyl substituents, rather than through minimisation of steric interactions alone." @default.
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- W2013291805 date "2007-01-01" @default.
- W2013291805 modified "2023-10-18" @default.
- W2013291805 title "On the origins of diastereoselectivity in the alkylation of diketopiperazine enolates" @default.
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- W2013291805 doi "https://doi.org/10.1039/b701628j" @default.
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