Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2005-03-04
2008-12-30
Wilson, James O. (Department: 1624)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
active
07470785
ABSTRACT:
A method of making chlorins comprises the steps of reacting (e.g. condensing) a dipyrrin western half intermediate with an eastern half intermediate to form a tetrahydrobilene, and then cyclizing the tetrahydrobilene to form a chlorin. Intermediates including tetrahydrobilenes useful in such reactions are also described.
REFERENCES:
patent: 5225433 (1993-07-01), Dougherty et al.
International Search Report for International Application Ser. NO. PCT/US02/14503 dated Aug. 7, 2002.
Taniguchi et al.,Chemical Abstracts136:30780 (2001).
Balasubramanian Thiagarajan
Lindsey Jonathan S.
Mo Guoning
Ra Doyoung
Taniguchi Masahiko
Myers Bigel Sibley & Sajovec P.A.
North Carolina State University
Ward Paul V.
Wilson James O.
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