Robert W. P. Hubbard's research while affiliated with Queen Mary, University of London and other places
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Publications (2)
1
H NMR chemical shifts are presented for virtually all the protons in 166 steroids. These comprise mainly the hormones testosterone, androst-4-ene-3,17-dione, progesterone, and a wide range of their hydroxylated derivatives, some corticosteroids including aldosterone and a series of its derivatives, together with miscellaneous steroids comprising...
Citations
... Me-18 resonance for -hydroxy compound is 0.80 ppm, whereas 1.03 for ) (Bhacca & Williams, 1966). Considering all these influ- ences on the chemical shift of Me-18, and comparing the published data for related compounds (Kirk et al., 1990), our experimental values fit only with 15 and 20 stere- ochemistry of the hydroxy and glucosyloxy groups in the molecule. The relative stereochemistry, and the absolute stereochemistry at C-20 was further established by NOESY (Fig. 1). ...
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... These relationships are in accordance with Barfield and Sternhell's studies. 37 Finally, with the values of the coupling constants well defined for 1b, the multiplets for the sterane skeleton could be correlated with the "signal templates" proposed by Kirk et al, in 1990. 38 In this work, based on the accumulation of 1 H NMR data of several steroid hormones, signal templates conserving the appearances of proton signals of rings A, B, C, and D were proposed for easy recognition. ...
