Coupling unit of (6-4) photoproduct, process for preparing the same, process for preparing oligonucleotide containing (6-4) photoproduct by using the same and process for preparing DNA containing (6-4) photoproduct by using the same
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United States of America Patent
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Feb 23, 1999
Grant Date -
N/A
app pub date -
Jan 15, 1997
filing date -
Jan 31, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A coupling unit of a (6-4) photoproduct represented by the formula (I): ##STR1## wherein R.sup.1 represents a protective group, R.sup.2 represents a methyl group or a 2-cyanoethyl group, and R.sup.3 represents ##STR2## wherein R.sup.5 represents a methyl group or a 2-cyanoethyl group, and R.sup.6 represents a --N(R')(R') group, a N-morpholino group, a N-pyrrolidinyl group or a 2,2,6,6-tetramethyl-N-piperidyl group where R' and R' each represent a lower alkyl group, a process for preparing the same, a process for preparing an oligonucleotide containing a (6-4) photoproduct by using the same, and a process for preparing DNA containing a (6-4) photoproduct by using the same are disclosed.
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