Method of preparing 9beta, 10alpha-5,7-diene steroids

Details Method of preparing 9beta, 10alpha-5,7-diene steroids Method of preparing 9beta, 10alpha-5,7-diene steroids

1993-02-24

1994-04-19

Niebling, John

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

2041579, 20415791, C07G 1300

Patent

active

053042913

ABSTRACT:
The invention relates to a method of preparing a 9beta,10alpha-5,7-diene steroid by irradiating the corresponding 9alpha,10beta-5,7-diene steroid with filtered ultraviolet light from an indium lamp.

REFERENCES:
patent: 3219565 (1965-11-01), Rappoldt
patent: 4601855 (1986-07-01), Rappoldt et al.
patent: 4837481 (1989-06-01), Verstegen et al.
Dauben et al., J. Am. Chem. Soc., 1982, 104, 355-356 "Wavelength-Controlled Production of Previtamin D.sub.3 ".
Dauben et al, J. Am. Chem. Soc., 1982, 104, 5780-5781 "Effects of Wavelength on the Photochemistry of Provitamin D.sub.3 ".
Malatesta et al, J. Am. Chem. Soc., 1981, 103, 6781-6783 "Laser Photochemical Production of Vitamin D".
Rappoldt et al, 80 (1961) Recueil, 43-46 "Investigations of Sterols XIX" 6-Dehydro-9.beta.,10.alpha.-progesterone.
Rappoldt et al, 90 (1971) Recueil, 27-32 "Investigations on Sterols XXXVII" New routes to 9,10-isomers.

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