Facile access to α,β-dehydroalanine and α,β-dehydroamino butyric acid derivatives from DL-serines and threonines
作者:Yong-Qing Yang、Meng-Chen Ji、Zheng Lu、Mao Jiang、Wei-Wei Huang、Xue-Zhi He
DOI:10.1080/00397911.2016.1149194
日期:2016.6.2
ABSTRACT Not only α,β-dehydroamino acids are important constituents for a number of bioactive peptides in nature, but also they are important building blocks for a variety of synthetic amino acids in organic synthesis. Methods to prepare dehydroamino acids have been reported extensively in the literature; however, efficient and convenient protocols are still required. Here we have developed a convenient
摘要 α,β-脱氢氨基酸不仅是自然界中许多生物活性肽的重要组成部分,而且还是有机合成中各种合成氨基酸的重要组成部分。文献中广泛报道了制备脱氢氨基酸的方法;然而,仍然需要有效和方便的协议。在这里,我们开发了一种方便的方法来制备分别衍生自 DL-丝氨酸和 DL-苏氨酸的脱氢丙氨酸 (ΔAla) 和脱氢氨基丁酸 (ΔAbu) 衍生物。该工艺采用4-甲苯磺酰氯(TsCl)和1,8-二氮杂双环[5.4.0]十一碳-7-烯(DBU),一锅完成羟基的活化和β-消除。由于方便易行,这种方法会引起合成化学家的注意。