Synthesis and Actions of a Melanotropin Conjugate, Ac-[Nle4, Glu(gamma-4′-hydroxyanilide)5, D-Phe7]α-MSH4–10-NH2, on Melanocytes and Melanoma Cells In Vitro
作者:Fahad Al-Obeidi、Marybeth Mulcahy、Valerie S. Pitt、Velma Begay、Mac E. Hadley、Victor J. Hruby
DOI:10.1002/jps.2600790609
日期:1990.6
bioactivity of this conjugate to melanomacells. 4'-Hydroxyaniline was attached to glutamic acid at position 5 in the superpotent melanotropin fragment analogue, Ac-[Nle4, D-Phe7]alpha-MSH4-10-NH2. The melanotropin:anilide conjugate, Ac-[Nle4, Glu(gamma-4'-hydroxyanilide)5, D-Phe7]alpha-MSH4-10-NH2, was not cytotoxic to B16 or Cloudman S91 mouse melanomacells in culture, as determined by cell counts and protein
Perich, John W.; Alewood, Paul F.; Johns, R. B., Australian Journal of Chemistry, 1987, vol. 40, # 2, p. 257 - 271
作者:Perich, John W.、Alewood, Paul F.、Johns, R. B.
DOI:——
日期:——
Revolutionary phosgene-free synthesis of α-amino acid N-carboxyanhydrides using diphenyl carbonate based on activation of α-amino acids by converting into imidazolium salts
作者:Koichi Koga、Atsushi Sudo、Takeshi Endo
DOI:10.1002/pola.24213
日期:——
α‐Amino acidsimidazolium salt smoothly reacted with diphenylcarbonate to afford the corresponding urethanes. The urethanes were activated by adding carboxylic acid to undergo selective cyclization, leading to successful development of a new phosgene‐free process for synthesizing α‐amino acid N‐carboxyanhydrides (NCAs).