Structure and significance of a novel rearranged monoaromatic steroid hydrocarbon in petroleum
作者： J.Michael Moldowan , Frederick J. Fago
DOI: 10.1016/0016-7037(86)90188-2
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摘要: Abstract A monoaromatic steroid hydrocarbon isolated from a catalytic dehydrogenation/isomerization mixture derived 5α-cholestane was determined to be (10β→ 5β) CH 3 -rearranged (2a) by 1 HNMR analysis. Gas chromatography-mass spectrometry (GCMS) coinjection with crude oil fraction and GCMS elution patterns suggest that this 5β-Me rearranged is part of series C 27 -C 29 homologues in 20S 20R pairs (2a-f) which are found nearly all oils. Evidence study Toarcian sediments West Germany shows the relative amounts compared regular (1a-1) C-ring steroids depends upon strength anoxic environment during sedimentation. In addition, observation rearranged/regular MA-steroid ratios suite Jurassic oils demonstrates differential effects maturation on preservation two biomarker compounds.
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