The constitutions of atrovenetin and of some related herqueinone derivatives
作者:D.H.R. Barton、P. de Mayo、G.A. Morrison、H. Raistrick
DOI:10.1016/0040-4020(59)80035-1
日期:1959.1
been confirmed by oxidative degradation to the appropriate naphthalic anhydrides as well as by further oxidation to nitrococussic acid. The constitution of an important oxidation product, C15H14O9N2, obtained by the action of nitric acid on atrovenetin has been established. On the basis of this and other evidence the constitutions of atrovenetin and certain of its transformation products have been elucidated
已证明脱氧, herqueinone和atrovenetin是相同的。根据光谱证据,这些化合物和相关物质已被表征为取代的9-羟基哌嗪酮。通过氧化降解为适当的萘酐以及进一步氧化为硝基古库斯酸,可以证实该结论。已经确定了重要的氧化产物C 15 H 14 O 9 N 2的组成,该产物通过硝酸作用于Atrovenetin而获得。基于该证据和其他证据,阐明了Atrovenetin的组成及其某些转化产物。
Dimroth; Fick, Justus Liebigs Annalen der Chemie, 1916, vol. 411, p. 323
作者:Dimroth、Fick
DOI:——
日期:——
Oxford; Raistrick, Biochemical Journal, 1940, vol. 34, p. 790,799
作者:Oxford、Raistrick
DOI:——
日期:——
Dimroth, Chemische Berichte, 1910, vol. 43, p. 1387,1398
作者:Dimroth
DOI:——
日期:——
Platinum-group elements for the Kudi ophiolite, western Kunlun
The analyses of PGE characteristics for the Kudi ophiolite, western Kunlun, are reported in this note. The Ir-depleted anomalous ancient upper mantle represented by the Kudi mantle peridotites had been percolated and mixed by remelted oceanic crust material from a supra-subduction zone, leaving the rocks relatively enriched in Pd. The PGE contents in the Kudi cumulate pyroxenites and gabbros vary from 2.4 to 23.94 ng/g, and the highest values are in pyroxenites. The Pd/Ir ratios increase from the pyroxenites to the gabbros. The PGE patterns for the Kudi cumulate rocks are steeply positively sloped. The Pd enrichment in these rocks is similar to that in pyroxenites from the Thetford ophiolite and the Troodos ophiolite. The Kudi diabase and basalts have low PGE contents and positively sloped PGE patterns, and are comparable with the upper pillow lavas from the Troodos ophiolite, indicative of the environment of back-are spreading center in a supra-subduction zone.