Synthesis of d-erythro-Dihydrosphingosine and d-xylo-Phytosphingosine from a Serine-Derived 1,5-Dioxaspiro[3.2]hexane Template
摘要:
[GRAPHICS]A serine-derived 1,5-dioxaspiro[3,2]hexane template is shown to be a useful precursor for both aminodiol and aminotriol sphingoid bases by its conversion to D-erythro-dihydrosphingosine and D-xylo-phytoshingosine.
Synthesis of d-erythro-Dihydrosphingosine and d-xylo-Phytosphingosine from a Serine-Derived 1,5-Dioxaspiro[3.2]hexane Template
摘要:
[GRAPHICS]A serine-derived 1,5-dioxaspiro[3,2]hexane template is shown to be a useful precursor for both aminodiol and aminotriol sphingoid bases by its conversion to D-erythro-dihydrosphingosine and D-xylo-phytoshingosine.
Synthesis of <i>epi</i>-Oxetin via a Serine-Derived 2-Methyleneoxetane
作者:Marisa L. Blauvelt、Amy R. Howell
DOI:10.1021/jo7018762
日期:2008.1.1
[GRAPHICS]The unique reactivity of 2-methyleneoxetanes and 1,5-dioxaspiro[3.2]hexanes has been exploited for the synthesis of epi-oxetin (26), an oxetane-containing beta-amino acid. While the preparation of the natural product oxetin (1) was the original goal, the unexpected diastereoselectivity of an precedented reduction provided the epi-oxetin framework. The methodology described herein should be amenable for the preparation of oxetin with a change in nitrogen protection.
The First General Synthesis of 1,5-Dioxaspiro[3.2]hexanes