Organic compounds -- part of the class 532-570 series – Organic compounds – Cyclopentanohydrophenanthrene ring system containing
Reexamination Certificate
2011-02-08
2011-02-08
Krass, Frederick (Department: 1612)
Organic compounds -- part of the class 532-570 series
Organic compounds
Cyclopentanohydrophenanthrene ring system containing
C514S178000
Reexamination Certificate
active
07884222
ABSTRACT:
A process for the syntheses of 17β-hydroxy-7α-methyl-19-nor-17α-pregn-5(10)-ene-20-yne-3-one (tibolone, 11) and intermediates useful for the synthesis thereof.
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Bhatarah Parveen
Greenwood Alan K.
McHattie Derek
Krass Frederick
Marshall & Gerstein & Borun LLP
Milligan Adam
Resolution Chemicals Limited
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