5-demethoxyfumagillol derivatives and processes for preparing the same
AssigneeChong Kun Dang Corp.
InventorsChung Hong, II, Jung Woo Kim, Sang Joon Lee, Soon Kil Ahn, Nam Song Choi, Ryung Kee Hong, Hyoung Sik Chun, Seung Kee Moon, Hong Woo Lee
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Abstract
Compounds useful as angiogenesis inhibiting agents and processes for their preparation are disclosed. In one embodiment, the compounds of the invention are represented by Formula 1: ##STR1## Also disclosed is a pharmaceutical composition for inhibiting angiogenesis in a mammal, said composition comprising a compound of Formula 1, or a pharmaceutically acceptable salt thereof, as an active ingredient.
Claims6
A compound, or a pharmaceutically acceptable salt thereof, represented by Formula 1:
- ##STR11## wherein a) --X is --OH;
- and
- --Y is chosen from halogen and, ##STR12## wherein R.sub.1 and R.sub.2 are individually chosen from --H and substituted or unsubstituted lower alkyl, with the proviso that R.sub.1 and R.sub.2 are not both --H;
- and
- Z.sup.- is a counter ion;
- or --X and --Y taken together form an oxirane ring;
- and
- b) --A-- is chosen from ##STR13## wherein R.sub.3 is chosen from substituted or unsubstituted lower alkyl, substituted or unsubstituted alkanoyl, substituted or unsubstituted aryl, substituted or unsubstituted arylalkyl and arylalkanoyl.
A process for preparing 5-demethoxyfumagillol 2, said process comprising:
- a) demethoxylating compound 19 to obtain compound 6;
- and ##STR15## b) reducing compound 6 to obtain 5-demethoxyfumagillol 2. ##STR16##
5-Demethoxyfumagillin represented by Chemical Formula 17.
Dependencies are inferred from the claim text.