POLYPHENOLIC ACIDS OF LITHOSPERMUM-RUDERALE .2. C-13 NUCLEAR MAGNETIC-RESONANCE OF LITHOSPERMIC AND ROSMARINIC ACIDS
POLYPHENOLIC ACIDS OF LITHOSPERMUM-RUDERALE .2. C-13 NUCLEAR MAGNETIC-RESONANCE OF LITHOSPERMIC AND ROSMARINIC ACIDS
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DOI：
10.1021/jo00865a007
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发表时间：
1976-01-01
影响因子：
3.6
通讯作者：
CARMACK, M
中科院分区：
文献类型：
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作者：
KELLEY, CJ;HARRUFF, RC;CARMACK, M
对咖啡酸、3-（3，4-二羟基苯基）乳酸及其一系列O-烷基化衍生物在中性水溶液中的~（13）C NMR谱进行了归属。这些化学位移用于分配迷迭香酸和绿原酸的碳。上述化合物用作解释紫草酸（1）C27 H22 O 12的13 C NMR谱的模型。还讨论了奎尼酸和2吗啡烷衍生物，羟吗啡酮和羟考酮，含有结构上类似于1的芳环的13 C NMR谱。
The 13C NMR spectra of caffeic acid and 3-(3,4-dihydroxyphenyl)lactic acid and a series of their O-alkylated derivatives in neutral aqueous solutions are fully assigned. These chemical shifts are used to assign the carbons of rosmarinic and chlorogenic acids. The foregoing compounds serve as models to interpret the 13C NMR spectrum of lithospermic acid (1), C27H22O12. Also discussed are the 13C NMR spectra of quinic acid and 2 morphinane derivatives, oxymorphone and oxycodone, containing aromatic rings structurally similar to 1.