Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives
Reexamination Certificate
2005-08-30
2005-08-30
Wilson, James O. (Department: 1623)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carbohydrates or derivatives
C536S023100, C536S025340, C536S025310, C536S025300, C536S025400, C536S026800, C536S028510, C536S022100, C546S044000, C530S330000, C514S203000, C514S049000
Reexamination Certificate
active
06936709
ABSTRACT:
A protected 2′-deoxycytidine is purified by precipitating the protected 2′-deoxycytidine represented by general formula (3) in the form of a hydrated crystal from a solution containing the protected 2′-deoxycytidine and water, and by recovering the protected 2′-deoxycytidine:wherein R1 represents a 4-methoxytrityl, 4, 4′-dimethoxytrityl, or triphenylmethyl group; and B1 represents a cytosine group having a protected amino group. The compound represented by general formula (3) is, in particular, a protected 2′-deoxycytidine represented by formula (4):The 2′-deoxycytidine is used as a raw material for antisense DNA.
REFERENCES:
patent: 4973679 (1990-11-01), Caruthers et al.
patent: 5179200 (1993-01-01), Molko et al.
patent: 0 090 789 (1983-05-01), None
patent: 58-180500 (1983-10-01), None
patent: 60-152495 (1985-08-01), None
patent: 63-179889 (1988-07-01), None
patent: 6-507883 (1994-09-01), None
patent: 92/13869 (1992-08-01), None
patent: 00/39138 (2000-07-01), None
patent: 00/75154 (2000-12-01), None
Fukuiri Yasushi
Ishibashi Hiroki
Matsuba Yasuko
Nagahara Kiyoteru
Burns Doane , Swecker, Mathis LLP
Khare Devesh
Mitsui Chemicals Inc.
Wilson James O.
LandOfFree
Method for purifying protected 2′-deoxycytidines and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for purifying protected 2′-deoxycytidines and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for purifying protected 2′-deoxycytidines and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3516638