1.All hydrogenations were run with 0.05% metal levels based on substrate and at concentrations of 2*10M.
所有氢化反应应加入占底物0.05%的金属（作为催化剂,Pt,Ni等等）,并且在2*10M的浓度下进行.（大哥,你这2*10M是20摩尔浓度还是2的10次方?你表达不清楚不能怪我的翻译呀!）
2.metallation with lithium diisopropylamide at 5°in place of butyllithium at -70°significantly improved the yields.
用二异丙基锂在5度下（金属化）反应代替丁基锂在-70度下反应显著提高了产率.