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Androstanes with Modified Carbon Skeletons (Eur. J. Org. Chem. 24/2011)
Author(s) -
Norden Sascha,
Bender Matthias,
Rullkötter Jürgen,
Christoffers Jens
Publication year - 2011
Publication title -
european journal of organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.825
H-Index - 155
eISSN - 1099-0690
pISSN - 1434-193X
DOI - 10.1002/ejoc.201190063
Subject(s) - chemistry , aromatization , carbon fibers , carbon skeleton , hydrocarbon , organic matter , sedimentary rock , geochemistry , geology , organic chemistry , materials science , composite number , composite material , catalysis
The cover picture shows the synthesis of a series of androstane derivatives. They are intended to serve as authentic standards for the structure elucidation of six unknown saturated C 19 and C 20 hydrocarbons detected in ca. 600 million year‐old sedimentary rocks and related crude oils from the South Oman Salt Basin. Phytosterols with 26 to 30 carbon atoms are commonly converted into their saturated hydrocarbon analogs during geochemical transformation associated with petroleum formation as a consequence of deep burial and geothermal heating of the biogenic organic matter in sedimentary rocks. To a certain extent, aromatization, skeletal rearrangement, and modifications of the carbon backbone occur as well. The background image shows a present‐day salt lake in the Rub' al Khali desert of South Oman (photograph by Günther Neuenhofer, Bocholt). Details are discussed in the article by J. Christoffers et al. on p. 4543 ff.