substitution in ring
英 [ˌsʌbstɪ'tjuːʃ(ə)n ɪn rɪŋ]
美 [ˌsʌbstɪ'tuʃ(ə)n ɪn rɪŋ]
【化】环上取代
双语例句
- The derivative of adding substitution groups in purine ring s 2 or 6 or 8 atoms are important organism medicine activating substances useful as an antiviral, anticancer, and hypotensor drugs. So study of purine derivative has important meaning.
在嘌呤环的2,6或8位碳原子上引入某些取代基团所得的衍生物具有抗病毒、抗癌和降血压等重要的生物医学活性，因此对嘌呤衍生物的研究具有重要意义。