Solid-Phase Synthesis of Callipeltin D. Stereochemical Confirmation of the Unnatural Amino Acid AGDHE
作者:David C. Cranfill、Ángel I. Morales-Ramos、Mark A. Lipton
DOI:10.1021/ol052438f
日期:2005.12.1
[structure: see text] The lipopeptide callipeltin D (1) was synthesized using an Fmoc-based solid-phase strategy in seven steps and 35% overall yield. The 1H NMR of synthetic 1 correlated closely with that of the natural product, confirming the configurational assignment of the novel amino acid constituent (2R,3R,4S)-4-amino-7-guanidino-2,3-dihydroxyheptanoic acid.