Synthetic studies of a constrained ring didemnin analog
作者:Scott C. Mayor、Amy J. Pfizenmayer、Richard Cordova、Wen-Ren Li、Madeleine M. Joullié
DOI:10.1016/0957-4166(94)80007-3
日期:1994.4
An asymmetric Diels-Alderreaction in the presence of 3.0 M lithiumperchlorate-diethylether 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. This constrained ring macrocycle should provide insight into the binding site conformation of the bioactive species.
Incorporation of an Amino Function in a (1S,2S,3R)-3-Hydroxy-2-methoxy-1-cyclohexane Carboxylic Acid
作者:Scott C. Mayer、Madeleine M. Joullié
DOI:10.1080/00397919408019060
日期:1994.8
Abstract (1S,2S,3R)-3-Hydroxy-2-methoxy-1-cyclohexanecarboxylic acid was synthesized for the construction of an amino acid to be used in a constrained ring didemninBanalog ( 2 ). The amine functionality was introduced into the cyclohexane ring by reductive amination using sodium triacetoxyborohydride or by oxime formation followed by reduction.
摘要 (1S,2S,3R)-3-羟基-2-甲氧基-1-环己烷甲酸被合成用于构建一种氨基酸,用于限制性环双膜素 B 类似物 (2)。通过使用三乙酰氧基硼氢化钠的还原胺化或通过肟形成然后还原,将胺官能团引入环己烷环中。
Synthetic Routes to a Constrained Ring Analog of Didemnin B
作者:Scott C. Mayer、Amy J. Pfizenmayer、Madeleine M. Joullié
DOI:10.1021/jo951693i
日期:1996.1.1
The didemnin class of biologically active cyclodepsipeptides, isolated from a marine tunicate, has shown antitumor, antiviral, and immunosuppressive activities. Synthetic studies were undertaken to prepare a modified analog of one of the most potent congeners, didemninB (1). The side chain of the isostatine unit was tethered into the macrocycle viaa cyclohexane ring in order to provide a more rigid