7,7-disubstituted (5H,9H)-6,8-dioxabenzocycloheptene...

Details 7,7-disubstituted (5H,9H)-6,8-dioxabenzocycloheptene... 7,7-disubstituted (5H,9H)-6,8-dioxabenzocycloheptene...

2008-01-15

2008-01-15

Andres, Janet (Department: 1625)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C549S336000, C568S715000

Reexamination Certificate

active

11598784

ABSTRACT:
Novel 7,7-disubstituted (5H,9H)-6,8-dioxabenzocycloheptene compounds having the structural formula (I):are useful intermediates in the synthesis of non-steroidal derivatives of vitamin D.

REFERENCES:
patent: 6235731 (2001-05-01), Shibouta et al.
patent: 6831106 (2004-12-01), Bernardon et al.
patent: 6924400 (2005-08-01), Bernardon et al.
patent: WO 01/38303 (2001-05-01), None
patent: WO 03/050067 (2003-06-01), None

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