| abstract |
A compound of the structuren wherein R 1 and R 2 are each, independently, hydrogen or n -COCH 2 -S-CH 2 CH 2 -O-CH 2 -(CH 2 OCH 2 ) n -CH 2 -O-CH 2 CH 2 -OCH 3 ; nand nn = 8 - 450; with the proviso that R 1 and R 2 are not both hydrogen, which is useful as an immunosuppressive, antiinflammatory, antifungal, antiproliferative, and antitumor agent. |