phakellin
National Institutes of Health
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The pyrrole-imidazole alkaloids constitute a family of more than 100 natural products,[1,2] among which palau'amine (1, Scheme 1…
Two new phakellin alkaloids, (-)-7-N-methyldibromophakellin (14) and (-)-7-N-methylmonobromophakellin (15), were isolated from an…
[reaction: see text] Monoenolates of C(2)-symmetric, proline-derived piperazine-2,5-diones were generated and trapped with a…