Einfache Darstellung des<scp>DL</scp>-Erythro-2-amino-octadecan-1,3-diols. 11. Mitteilung über Sphingosin und Sphingolipoide
作者:I. Sallay、F. Dutka、G. Fodor
DOI:10.1002/hlca.19540370315
日期:——
A five-step synthesis of DL-erythro-2-acetamino-octadecan-1,3-diol (IXb) from palmitoic acid was realised. Palmitoic acid was converted into 2-bromo-palmitoylbrornide (11), this, in turn, condensed with ethyl diazoacetate into ethyl 2-diazo-3-oxo-4-bromostearate (IV), which furnished on hydrogenolysis the hydrochloride of ethyl 2-amino-3-oxo-stearate (Vb). – The N-acetyl derivative X of the latter
实现了由棕榈酸五步合成DL-赤型-2-乙酰氨基-十八烷-1,3-二醇(IXb)。棕榈酸被转化成2-溴-棕榈酰溴化物(11),然后与重氮乙酸乙酯缩合成2-重氮-3-氧代-4-溴化硬脂酸乙酯(IV),将其氢解后得到2-乙基的盐酸盐。氨基-3-氧代硬脂酸酯(Vb)。-通过LiBH,N-乙酰基-2-氨基-1,3-十八烷二醇(IXb)的作用提供的后者的N-乙酰基衍生物X,基于棕榈酸的收率为26%。