220657-18-1Relevant articles and documents
Total synthesis and biological evaluation of tamandarin B analogues
Adrio, Javier,Cuevas, Carmen,Manzanares, Ignacio,Joullie, Madeleine M.
, p. 5129 - 5138 (2008/02/07)
(Chemical Equation Presented) Tamandarins A and B are a class of marine natural cyclodepsipeptides with structures and biological activities closely related to those of the didemnins. The easier synthetic access to tamandarins accelerates the preparation of new macrocyclic derivatives of this family of antitumor, antiviral, and immunosuppressive compounds. The optimization of the previously reported synthetic route to tamandarins by changing the macrolactamization site from Nst1 and Thr6 to Pro 4 and N,O-Me2Tyr5 residues led to a significant improvement in the reaction yield. Using this new synthetic approach, four new macrocyclic analogues of tamandarin B were prepared and evaluated for anticancer activity. These results provide further insight into the structure-activity relationship of the tamandarins and didemnins.
Synthesis and biological evaluation of tamandarin B analogues
Adrio, Javier,Cuevas, Carmen,Manzanares, Ignacio,Joullie, Madeleine M.
, p. 511 - 514 (2007/10/03)
The synthesis of two tamandarin B analogues in which the N,O-Me 2Tyr5 unit was replaced by N-Me-phenylalanine (N-MePhe5) and (S)-2-(methylamino)-3-(naphthalen-2-yl)propanoic acid (N-MeNaphth5) is described. The
Synthesis and biological activities of [N-MeLeu5]- and [N-MePhe5]- didemnin B
Pfizenmayer, Amy J.,Ramanjulu, Joshi M.,Vera, Matthew D.,Ding, Xiaobin,Xiao, Dong,Chen, Wei-Chuan,Joullie, Madeleine M.
, p. 313 - 334 (2007/10/03)
Based on information from X-ray, NMR, and SAR data, the N,O-diMeTyr5 unit of didemnin B was believed to be important for biological activity. To determine the importance of aromaticity and the role of the methoxy group in this unit, two analogs