| abstract |
The compounds represented by the following general formula (I), their pharmacologically acceptable salts or hydrates thereof: (I) wherein w represents and R3, R7, R16, R17, R20, R21 'are the same or different and each represents HYDROGEN, ETC. Due to the inhibition of angiogenesis and the inhibition of the production of VEGF particularly in hypoxia, the compounds (I) are useful as drugs for solid cancer. |