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Development of carborane synthons: Synthesis and chemistry of (aminoalkyl)carboranes

Journal Article · · Inorganic Chemistry; (United States)
DOI:https://doi.org/10.1021/ic00036a043· OSTI ID:6975674
 [1]; ;  [2];
  1. Australian Nuclear Science and Technology Organization, Menai, New South Wales (Australia)
  2. Ohio State Univ., Columbus (United States)

A number of (aminoalkyl)-1,2-closo-dodecaboranes have been synthesized to provide carboranes with a functional group for covalent incorporation into structures of potential use in the treatment of cancer by boron neutron capture therapy (BNCT). (Phthalimidoalkyl)acetylenes reacted with decaborane to give the corresponding carboranes; removal of the phthalimido group under mild conditions using sodium borohydride in 2-propanol furnished the (aminoalkyl)carboranes which were isolated as their hydrochloride salts. An alternative approach involved the conversion of an (iodoalkyl)- or a ((tosyloxy)alkyl)carborane to the azido derivative which gave the amine on hydrogenation. An effective way of attaching a carborane moiety to thiouracil, which is selectively taken up in melanoma cells, is illustrated by the acylation of two of these amines with thiouracil-5-carboxylic acid.

DOE Contract Number:
FG02-90ER60972
OSTI ID:
6975674
Journal Information:
Inorganic Chemistry; (United States), Journal Name: Inorganic Chemistry; (United States) Vol. 31:10; ISSN 0020-1669; ISSN INOCAJ
Country of Publication:
United States
Language:
English