Zobrazeno 1 - 10
of 16
pro vyhledávání: '"and Amy J. Pfizenmayer"'
Publikováno v:
The Journal of Organic Chemistry. 66:7575-7587
The design and synthesis of two conformationally constrained analogues of didemnin B are described. The [N,O-Me(2)Tyr(5)]residue of didemnin B was replaced with L-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid (Tic) and L-1,2,3,4-tetrahydro-7-metho
Publikováno v:
Bioorganic & Medicinal Chemistry Letters. 11:13-16
The synthesis and biological activity of N e -Z-[Lys 3 ]didemnin B are reported. This novel analogue retains antiproliferative, cytotoxic, and protein biosynthesis inhibition activities, but at reduced levels. This result suggests the use of [Lys 3 ]
Autor:
Joshi M. Ramanjulu, Matthew D. Vera, Chen Wei-Chuan, Madeleine M. Joullié, Dong Xiao, Xiaobin Ding, Amy J. Pfizenmayer
Publikováno v:
Tetrahedron. 55:313-334
Based on information from X-ray, NMR, and SAR data, the N , O -diMeTyr 5 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 w
Autor:
Matthew D. Vera, Deepika Tandon, Amy J. Pfizenmayer, Wei-Chuan Chen, Peter L. Toogood, Madeleine M. Joullié, Xiaobin Ding, Dong Xiao
Publikováno v:
Bioorganic & Medicinal Chemistry Letters. 8:3653-3656
A didemnin B analog containing a Tic (1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid) as a conformationally restrained replacement for tyrosine has been synthesized and shown to have comparable potency as a protein biosynthesis inhibitor. Synthetic
Publikováno v:
Tetrahedron: Asymmetry. 8:3043-3046
β-Hydroxy-λ-amino acids are a class of non-proteinogenic amino acids present in many important biologically active natural products. In conjunction with our research on didemnins, we designed and synthesized a sterically constrained β-hydroxy-λ-a
Publikováno v:
Tetrahedron: Asymmetry. 5:519-522
An asymmetric Diels-Alder reaction in the presence of 3.0 M lithium perchlorate-diethyl ether was used to generate the initial stereochemistry for a cyclohexane amino acid (3), a key intermediate in the preparation of a fused ring didemnin analog. Th
Publikováno v:
ChemInform. 25
Publikováno v:
ChemInform. 26
Publikováno v:
ChemInform. 27
Autor:
Dong Xiao, Xiaobin Ding, Amy J. Pfizenmayer, Madeleine M. Joullié, Matthew D. Vera, Wei-Chuan Chen
Publikováno v:
ChemInform. 30