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Testosterone 1 beta-hydroxylation by human cytochrome P450 3A4.
Krauser JA, Voehler M, Tseng LH, Schefer AB, Godejohann M, Guengerich FP. Krauser JA, et al. Among authors: schefer ab. Eur J Biochem. 2004 Oct;271(19):3962-9. doi: 10.1111/j.1432-1033.2004.04339.x. Eur J Biochem. 2004. PMID: 15373842 Free article.
Application of high-performance liquid chromatography-nuclear magnetic resonance coupling to the identification of limonoids from mahogany tree (Switenia macrophylla, Meliaceae) by stopped-flow 1D and 2D NMR spectroscopy.
Schefer AB, Braumann U, Tseng LH, Spraul M, Soares MG, Fernandes JB, da Silva MF, Vieira PC, Ferreira AG. Schefer AB, et al. J Chromatogr A. 2006 Sep 22;1128(1-2):152-63. doi: 10.1016/j.chroma.2006.06.059. Epub 2006 Aug 14. J Chromatogr A. 2006. PMID: 16904679
Separation and NMR studies on lignans of Raulinoa echinata.
Biavatti MW, Vieira PC, da Silva MF, Fernandes JB, Degani AL, Cass QB, Schefer AB, Ferreira AG. Biavatti MW, et al. Among authors: schefer ab. Phytochem Anal. 2001 Jan-Feb;12(1):64-8. doi: 10.1002/1099-1565(200101/02)12:1<64::AID-PCA562>3.0.CO;2-3. Phytochem Anal. 2001. PMID: 11704964
Hyphenated techniques.
Albert K, Krucker M, Glaser T, Schefer A, Lienau A, Zeeb D. Albert K, et al. Anal Bioanal Chem. 2002 Jan;372(1):25-6. doi: 10.1007/s00216-001-1158-x. Epub 2001 Dec 8. Anal Bioanal Chem. 2002. PMID: 11939202 No abstract available.