Antineoplastic Agents. 599. Total Synthesis of Dolastatin 16
作者:George R. Pettit、Thomas H. Smith、Pablo M. Arce、Erik J. Flahive、Collin R. Anderson、Jean-Charles Chapuis、Jun-Ping Xu、Thomas L. Groy、Paul E. Belcher、Christian B. Macdonald
DOI:10.1021/np500925y
日期:2015.3.27
23-step total synthesis of the cyclodepsipeptide dolastatin 16 (1) has been achieved. Synthesis of the dolaphenvaline and dolamethylleuine amino acid units using simplified methods improved the overall efficiency. The formation of the 25-membered macrocycle employing lactonization with 2-methyl-6-nitrobenzoic anhydride completed a key step in the synthesis. Regrettably, the synthetic dolastatin 16 (1), while
Some derivatives of dolastatin 16, a depsipeptidenatural product first obtained from the sea hare Dolabella auricularia, were synthesized through second-generation synthesis of two unusual amino acids, dolaphenvaline and dolamethylleuine. The second-generation synthesisenabled derivatizations such as functionalization of the aromatic ring in dolaphenvaline. The derivatives of fragments and whole
Total synthesis and biological activity of dolastatin 16
作者:Loida O. Casalme、Arisa Yamauchi、Akinori Sato、Julie G. Petitbois、Yasuyuki Nogata、Erina Yoshimura、Tatsufumi Okino、Taiki Umezawa、Fuyuhiko Matsuda
DOI:10.1039/c6ob02657e
日期:——
The total synthesis of dolastatin 16, a macrocyclic depsipeptide first isolatedfrom the seahareDolabellaauricularia as a potential antineoplastic metabolite by Pettit et al., was achieved in a convergent manner. Dolastatin 16 was reported by Tan to exhibit strong antifouling activity, and thus shows promise for inhibiting the attachment of marine benthic organisms such as Amphibalanus amphitrite