Enantioselective Synthesis for the Antipodes of Slagenins B and C: Establishment of Absolute Stereochemistry
作者:Biao Jiang、Jia-Feng Liu、Sheng-Yin Zhao
DOI:10.1021/ol016689+
日期:2001.12.1
[reaction: see text] The total synthesis for the (-)-antipode of slagenin B (12) and the (+)-antipode of slagenin C (13) was achieved with the condensation of glyoxal hydrate 10 and urea as the key step. The absolute stereochemistries of naturally isolated slagenins B and C were assigned to be (9R,11R,15R)-1b and (9R,11S,15S)-1c, respectively.
[反应:见正文]以乙二醛水合物10和尿素的缩合为关键步骤,完成了蛇胶蛋白B(12)(-)-正负离子和蛇胶蛋白C(+)-(正负离子)的全合成。 。天然分离的Slagenins B和C的绝对立体化学分别为(9R,11R,15R)-1b和(9R,11S,15S)-1c。