作者:Henry N. C. Wong、Zun Le Xu、Hson Mou Chang、Chi Ming Lee
DOI:10.1055/s-1992-26228
日期:——
The synthesis of racemic forms of the reportedly active principle of Danshen, namely (±)-ß-(3,4-dihydroxyphenyl)lactic acid [(±)- 3-(3,4-dihydroxyphenyl)-2-hydroxypropanoic acid] and its seven racemic derivatives is reported.
The tunichromes. A class of reducing blood pigments from sea squirts: isolation, structures, and vanadium chemistry
作者:Eugene M. Oltz、Reimar C. Bruening、Mitchell J. Smith、Kenneth. Kustin、Koji. Nakanishi
DOI:10.1021/ja00226a035
日期:1988.8
Practical Preparation of <i>Z</i>‐α‐(<i>N</i>‐Acetylamino)‐ and <i>Z</i>‐α‐(<i>N</i>‐Benzoylamino)‐α,β‐unsaturated Acids
作者:Branko S. Jursic、Sarada Sagiraju、Dustin K. Ancalade、Traneil Clark、Edwin D. Stevens
DOI:10.1080/00397910701265895
日期:2007.5.1
An efficient two‐step synthetic procedure for the preparation of numerous variations of N‐protected α,β‐unsaturated α‐amino acids and their corresponding esters from N‐protected glycine and either aliphatic or aromatic aldehydes was developed. The reaction involved cyclization of the N‐protected glycine into oxazolone, condensation with the aldehyde, and ring opening with a base.
摘要 开发了一种有效的两步合成程序,用于从 N-保护的甘氨酸和脂肪族或芳香族醛制备 N-保护的 α,β-不饱和 α-氨基酸及其相应的酯的多种变体。该反应包括将 N 保护的甘氨酸环化为恶唑酮、与醛缩合以及与碱开环。