The present invention relates to a positive working photosensitive composition having an improved sensitivity due to the use of a sensitizer and having an excellent incandescent light safety. This composition comprises at least 1 molar % of a structural unit derived from at least one of monomers having the following general formulae: ##STR1## wherein: R.sub.1 represents a hydrogen atom, an alkyl group or a substituted alkyl group, R.sub.2 represents a divalent alkylene group or a substituted divalent alkylene group, R.sub.3, R.sub.4 and R.sub.5 may be the same as or different from each other and each represents an alkyl group, a substituted alkyl group, an aryl group or a substituted aryl group, R.sub.6 and R.sub.7 may be the same as or different from each other and each represents a hydrogen atom, an alkyl group, a substituted alkyl group, an aryl group or a substituted aryl group, Ar.sub.1 represents a single bond or Ar.sub.2, and Ar.sub.2 represents a divalent arylene group or a substituted divalent arylene group.
Provided herein are carbamate compounds which may be useful in the treatment of for example, pain, solid tumors and/or obesity.
本文提供了一些氨基甲酸酯化合物,可能对例如疼痛、实体肿瘤和/或肥胖症的治疗有用。
A novel linkage for the solid-phase synthesis of hydroxamic acids
作者:Udo Bauer、Wen-Bin Ho、Ari M.P. Koskinen
DOI:10.1016/s0040-4039(97)01678-x
日期:1997.10
A novel linkage for the solid-phase synthesis of hydroxamic acids is described and its facile application for the solid phase synthesis of peptidyl, succinyl and urea-type hydroxamic acids is illustrated. Cleavage is induced under mild acidic conditions by treatment with formic acid in THF, providing hydroxamic acids in high purity and fair to good yields. (C) 1997 Elsevier Science Ltd.