| 中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
|---|---|---|---|---|
| —— | trans,trans-2,6-dimethylcyclohexanol | 42846-29-7 | C8H16O | 128.214 |
As age-related cataract is the leading cause of blindness in Nepal, much more attention should be given to improving surgical outcomes. The aim of our study was to determine the effectiveness and risks of extracapsular cataract surgery (ECCE) for age-related cataract in a tertiary hospital of eastern Nepal. ECCE with posterior chamber intraocular lens (PC IOL) insertion on 797 eyes (754 patients) revealed improved visual acuity in 97.9%. In 595 (74.6%) the best corrected visual acuity was 6/18 or better, and 167 (20.9%) had 6/24 to 6/60 with negligible operative/postoperative complications. Thus it is concluded that ECCE with PC IOL could be performed safely and effectively even in developing countries where people are unaware that surgery is available and of the good surgical outcome.
The reduction of cis-2,6-dimethylcyclohexanone with NaBH4 in methanol is shown to produce predominantly the axial alcohol, an unexpected result based upon prior reports and current paradigms for similar cyclohexanone reductions. This finding prompted a careful and systematic investigation of the NaBH4 and LiAlH4 reductions of cis- and trans-2,6-dimethylcyclohexanones in various solvents, with additional results contrary to literature reports. Possible explanations for these discrepancies are given, an unusual solvent effect is noted, the rate of epimerization versus reduction is examined, molecular modeling results are reported, and an important caveat is offered for future stereochemical studies of this nature.Key words: cyclic ketone reduction, stereochemistry, molecular modeling.