摘要
本文将23个缩酚酸的^(13)CNMR谱的化学位移实测值(δ_(mes))与根据Savitsky规则计算得到的化学位移计算值(δ_(cal))相比较,讨论苯环上各种取代基和取代位置对苯环碳的化学位移(δ)值的影响;同时得出一些对该类化合物苯环碳的δ值指定有帮助的规律。
This paper focus on the comparison between the 13C NMR chemical shifts measured (δ5mes) with those calculated (δcal) by Savitsky additivity rule of 23 depsides; the discuss in of the effects of substituted group and substituted position in substituted benzenes of the depside; and the predict rule for assinging the chemical shifts in substituent benzenes of the depside.
出处
《云南植物研究》
CSCD
1992年第4期445-452,共8页
Acta Botanica Yunnanica
关键词
地衣
缩酚酸
碳13
NMR
化学位移
Lichen
Depside
Orcinol type
β-orcipol type
13C NMR
Chemical shift
