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青蒿素(arteannuin)是中药青蒿中抗疟的有效成分,它是一种含有过氧基团的新型倍半萜内酯,在红外光谱中的强吸收谱带831,881,1115cm~(-1)为过氧基团的特征振动频率.Philpotts等对870cm~(-1)附近的强红外吸收谱带为过氧基团振动频率曾提出疑点,特别是叔过氧基团化合物,它在800～900cm~(-1)范围内产生的强谱带归属于一C—O—基团的振动.而且过氧基团两侧取代基结构不同也将影响谱带的改变,拉电子基团会导致振动频率的波数增大,而推电子基团则使频率向低波数位移.本文用激光拉曼光谱并辅以红外光谱进行研究,比较了700～900cm~(-1)各谱带的谱型,相对强度和退偏振比等数据,并排除了倍半萜环振
Arteannuin is an effective anti-malaria component of Artemisia annua, a new type of sesquiterpene lactone with peroxy group. Its strong absorption band in infrared spectrum is 831,881,1115cm -1 ) Is the characteristic vibrational frequency of peroxy group.Philpotts et al on the strong infrared absorption band around 870cm ~ (-1) for the peroxide group vibration frequency have raised doubts, especially the tertiary peroxide compounds, which 800 Strong bands generated in the range of ~ 900 cm -1 belong to the vibration of a C-O- group, and the different substituents on both sides of the peroxy group will also affect the band changes. Resulting in an increase of the wavenumber of the vibrational frequencies and the shift of the electron group to a low wavenumber.In this paper, the laser Raman spectra and the infrared spectra were used to study the spectra. The spectra of 700 ~ 900cm ~ (-1) Type, relative intensity and depolarization ratio and other data, and exclude the sesquiterpene ring vibration