作者:Karsten Krohn、Ulrich Müller
DOI:10.1016/s0040-4020(01)82102-5
日期:1986.1
The aldehydes 4 ,8a/8b and the acetals 5a/5b are prepared from the (S)-lactic acid derivative 3. Marschalk reaction with leucoquinizarine (10) affords rhodomycinones with one, two or three hydroxy groups in ring A. The 7,9-cis-diol 21 (6-demethoxyfeudomycinone C) is the major cyclization product of the acetonides 20a/20b.
醛4,8A / 8B和缩醛5A / 5B是从(S)中制备乳酸衍生物3。Marschalk与leucoquinizarine(10)反应可得到在环A中带有一个,两个或三个羟基的Rhodomycinones。7,9-顺式二醇21(6-demethoxymethoxyudomycinone C)是丙酮化物20a / 20b的主要环化产物。