(-)-Erinapyrone A 和 (-)-erinapyrone B 已成功通过少量步骤从双(2-(1,3-二硫烷基))甲烷、(S)-丙二醇和(R)-苯基环氧化物合成。然而,这些合成化合物的比旋光度比天然产物更高。通过使用对映体环氧化物,合成了erinapyrones A 和 B 的两种对映体,这些对映体显示出绝对值相同但符号相反的比旋光度。此外,还合成了外消旋化合物作为标准样品,用于在手性气相色谱柱上进行光学分辨率分析。
Synthesis of diverse acyclic precursors to pyrroles for studies of prebiotic routes to tetrapyrrole macrocycles
作者:Vanampally Chandrashaker、Marcin Ptaszek、Masahiko Taniguchi、Jonathan S. Lindsey
DOI:10.1039/c6nj02048h
日期:——
relied on the availability of diverse starting materials prepared by traditional chemical synthesis methods. Here the synthesis of all acyclic dicarbonyl compounds and α-aminoketones used in the prior prebiotic model studies is described. There are five sets of acyclic dicarbonyl compounds including (i) β-ketoesters bearing diverse 4-substituents, (ii) levulinic acid derivatives bearing selected 5-substituents
(-)-Erinapyrone A and (-)-erinapyrone B have been synthesized in short steps from bis-2-(1,3-dithianyl)methane, (S)-propylene oxide and (R)-benzyl glycidyl ether. These synthetic compounds, however, showed higher specific rotation values than those of the natural products. Both enantiomers of erinapyrones A and B were synthesized by the use of antipodal epoxides. These enantiomers showed same specific rotation values with reverse signs. The racemic compounds were also synthesized as standard samples for analysis on chiral gc column for optical resolution.
(-)-Erinapyrone A 和 (-)-erinapyrone B 已成功通过少量步骤从双(2-(1,3-二硫烷基))甲烷、(S)-丙二醇和(R)-苯基环氧化物合成。然而,这些合成化合物的比旋光度比天然产物更高。通过使用对映体环氧化物,合成了erinapyrones A 和 B 的两种对映体,这些对映体显示出绝对值相同但符号相反的比旋光度。此外,还合成了外消旋化合物作为标准样品,用于在手性气相色谱柱上进行光学分辨率分析。