The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 30, 2005
Filed:
Jun. 04, 2003
Hiroki Ishibashi, Omuta, JP;
Kiyoteru Nagahara, Omuta, JP;
Yasushi Fukuiri, Omuta, JP;
Yasuko Matsuba, Omuta, JP;
Hiroki Ishibashi, Omuta, JP;
Kiyoteru Nagahara, Omuta, JP;
Yasushi Fukuiri, Omuta, JP;
Yasuko Matsuba, Omuta, JP;
Mitsui Chemicals, Inc., Tokyo, JP;
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.