There are provided compounds of the formula
wherein X, Y, R
1
, R
2
, R
3
, R
3
, R
4
, R
5
, R
6
and R
7
are as described herein and enantiomers and pharmaceutically acceptable salts and esters thereof. The compounds are useful as anticancer agents.
Alkane functionalization on a preparative scale by mercury-photosensitized cross-dehydrodimerization
作者:Stephen H. Brown、Robert H. Crabtree
DOI:10.1021/ja00190a032
日期:1989.4
5-trioxacyclohexane < ethanol < isobutane < THF < Etsub3}SiH. The observed selectivities generally parallel those for homodimerization, reported in the preceding paper, but certain differences are noted, and reasons for the differences are proposed. The bond-dissociation energymore » of Etsub3}SiH is estimated from the reactivity data to be 90 kcal/mol. Eleven new carbinols are synthesized. 39 refs., 6 tabs
OPTICAL RECORDING MEDIUM AND COMPOUND USED FOR THE SAME
申请人:SHIOZAKI Hiroyoshi
公开号:US20090306376A1
公开(公告)日:2009-12-10
A compound comprising a ring structure including a ring composed of four carbon atoms and two nitrogen atoms and a substituted or unsubstituted amino group bonded to the ring structure.
This invention provides analogs of triptycene which are useful as anticancer drugs, as well as for other uses. The potency of these compounds is in a similar magnitude as daunomycin, a currently used anticancer drug. Each compound of the invention produces one or more desired effects (blocking nucleoside transport, inhibiting nucleic acid or protein syntheses, decreasing the proliferation and viability of cancer cells, inducing DNA fragmentation or retaining their effectiveness against multidrug-resistant tumor cells).
FULLERENE DERIVATIVE AND n-TYPE SEMICONDUCTOR MATERIAL
申请人:DAIKIN INDUSTRIES, LTD.
公开号:US20180282274A1
公开(公告)日:2018-10-04
An object of the present invention is to provide a novel fullerene derivative usable in n-type semiconductor materials for organic thin-film solar cells and the like. The object is achieved by a fullerene derivative represented by formula (1)
wherein R
1
represents aryl optionally substituted with at least one substituent, R
2
represents an organic group, R
3
represents an organic group, with the proviso that at least one of R
2
and R
3
is alkyl optionally substituted with at least one substituent or alkyl ether optionally substituted with at least one substituent, R
4
represents hydrogen or an organic group, and a ring A represents a fullerene ring.