Total Synthesis, Structure, and Oral Absorption of a Thiazole Cyclic Peptide, Sanguinamide A
摘要:
The first total synthesis and three-dimensional solution structure are reported for sanguinamide A, a thiazole-containing cyclic peptide from the sea slug H. sanguineus. Solution phase fragment synthesis, solid phase fragment assembly, and solution macrocyclization were combined to give (1) in 10% yield. Spectral properties were identical for the natural product, requiring revision of its structure from (2) to (1). Intramolecular transannular hydrogen bonds help to bury polar atoms, which enables oral absorption from the gut.
A convenient method for the preparation of 2-(1-aminoalkyl)thiazole-4-carboxylic acids, key intermediates in the total synthesis of naturally occurring antitumor cyclopeptides
Observations on the Hantzsch Reaction: Synthesis of <i>N</i>-<sup>t</sup>Boc-<i>S</i>-Dolaphenine
作者:Martin W. Bredenkamp、Cedric W. Holzapfel、Renske M. Snyman、Wynand J. van Zyl
DOI:10.1080/00397919209409251
日期:1992.11
Abstract An understanding of the mechanism by which racemization occurs in the Hantzsch reaction preparation of 2-(1-aminoalkyl)thiazoles has enabled the development of a methodology to prevent racemization. N-tBoc-S-dolaphenine (3) is then synthesized using this methodology.
A convenient method for the preparation of 2-(1-aminoalkyl)thiazole-4-carboxylic acids, key intermediates in the total synthesis of naturally occurring antitumor cyclopeptides
作者:Raymond Houssin、Michele Lohez、Jean Luc Bernier、Jean Pierre Henichart
DOI:10.1021/jo00215a040
日期:1985.7
Total Synthesis, Structure, and Oral Absorption of a Thiazole Cyclic Peptide, Sanguinamide A
作者:Daniel S. Nielsen、Huy N. Hoang、Rink-Jan Lohman、Frederik Diness、David P. Fairlie
DOI:10.1021/ol3027347
日期:2012.11.16
The first total synthesis and three-dimensional solution structure are reported for sanguinamide A, a thiazole-containing cyclic peptide from the sea slug H. sanguineus. Solution phase fragment synthesis, solid phase fragment assembly, and solution macrocyclization were combined to give (1) in 10% yield. Spectral properties were identical for the natural product, requiring revision of its structure from (2) to (1). Intramolecular transannular hydrogen bonds help to bury polar atoms, which enables oral absorption from the gut.