STUDIES ON THE CHEMICAL AND PHOTOCHEMICAL OXIDATION OF BACTERIOCHLOROPHYLL
STUDIES ON THE CHEMICAL AND PHOTOCHEMICAL OXIDATION OF BACTERIOCHLOROPHYLL
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细菌叶绿素的化学氧化和光化学氧化研究
DOI：
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发表时间：
1966
期刊：
影响因子：
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通讯作者：
M. Calvin
中科院分区：
文献类型：
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作者：
J. Smith;M. Calvin
本文介绍了一种从红球藻中制备细菌叶绿素晶体的简便方法。红色。细菌叶绿素与醌的化学脱氢显示出高产率的2-脱乙烯基-2乙酰基-叶绿素a，而细菌叶绿素的光氧化导致的混合物的产品，其中2-脱乙烯基-2乙酰基-叶绿素a只是一个次要的成分。在不同的反应条件下，在这些氧化过程中，已经观察到一些有趣的结果。这些意见进行了讨论，并概述了可能的反应机理。本文报道了2-去乙烯基-2-乙酰基叶绿素a在氘代丙酮中的质子磁共振谱和该色素及其无镁衍生物在丙酮中的可见吸收光谱。正如预期的那样，这些光谱表现出与叶绿素a和脱镁叶绿素a的显著相似性。
A simplified procedure is described for the preparation of crystalline bacteriochlorophyll from R. rubrum. The chemical dehydrogenation of bacteriochlorophyll with quinones is shown to give high yields of 2-desvinyl-2acetyl-chlorophyll a, whereas the photo-oxidation of bacteriochlorophyll results in a mixture of products of which 2-desvinyl-2acetyl-chlorophyll a is only a minor constituent. A number of interesting results have been observed spectrophotometrically during these oxidations under different reaction conditions. These observations are discussed and possible reaction mechanisms are outlined. The proton magnetic resonance spectrum of 2-desvinyl-2acetyl-chlorophyll a in deuteroacetone and the visible absorption spectra of this pigment and its magnesium-free derivative in acetone are reported. As expected, these spectra exhibit a marked resemblance to chlorophyll a and pheophytin a.