The Totally Protected Hydroxy Containing α-Amino Phosphonic Esters and α-Amino Phosphinoxides as well as Their Carbamoyl Derivatives
摘要:
Syntheses of the title compounds by the addition of diethyl phosphite as well as dimethylphosphine oxide in a Strecker-type reaction to the cyclic imines 1,2 followed by conversion to the related N-carbamoyl compounds are described.
Synthese totalgeschützter, nichtproteinogener α-Aminosäuren und Oligopeptide aus 2H-1,3-Oxazinen und 2H-1,3-Benzoxazinen via Ugi-Reaktion
摘要:
The preparation of six-membered N,O-heterocyclic 2H-1,3-oxazines 1 and 2H-1,3-benzoxazines 2 and the use of them in the synthesis of the corresponding alpha-amino acids 3a-c, 4a-c and oligopeptides 3d,e, 4d-f are described These compounds are prepared based on the Ugi four-component-condensation reaction.
Phosphinic Acid Analogues of Thiaproline and the Related Heterocyclic Aminophosphinic Acids
作者:Mostafa Hatam、Jürgen Martens
DOI:10.1080/00397919508011799
日期:1995.9
Abstract Bis(trimethylsilyl) phosphonite adds in a 1,2 fashion to the C = N bond in 3-thiazolines 3a-d to give after hydrolysis phosphinicacids 5a-d. Starting from 3-oxazines, the corresponding 6a,b phosphinicacids 7a,b were obtained.
摘要 双(三甲基甲硅烷基)亚膦酸酯以 1,2 的方式添加到 3-噻唑啉 3a-d 中的 C = N 键上,水解后生成次膦酸 5a-d。从 3-恶嗪开始,得到相应的 6a,b 次膦酸 7a,b。
The Diastereoselective Synthesis of Oxacephams from 1,3-2H-Oxazines