transfer efficiency perhaps accounts for the none observation
of higher photodamage with HBCD, contrary to expectation.
In the presence of oxygen, the photosensitized cleavage effi-
ciency of HB, MAHB, and HBCD to CT DNA all increased
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ꢃ
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, O
ꢃ
(
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ꢃ
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1
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reaction with the mercaptoacetic acid, the collection yield of
monosubstituted HB increased from 12% to 67%. The yield
from the tosylation of the b-cyclodextrin was likewise
increased from 31% to 42% when DCC was used as dehydrant.
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better photodynamic therapy properties than HB and MAHB.
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