Novel Thiophene Derived from Higher Plan
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Pierre Adam; Jean M. Trendel; Pierre Albrecht; Jacques Connan
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Article
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1991
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Elsevier Science
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French
β 276 KB
Triterpenoids are widespread in the subsurface where they occur under various forms (ahcanes, alkenes. aromatic hydrocarbons, acids... ) resulting from the geological transformations of their precursors present in Irving organisms. They are mainly derived from hopanoids of bactenal ongin and from mt