An orally administrable antibacterial agent which contains as an active ingredient a carbapenem compound represented by the formula [1] below,
wherein R
0
represents hydrogen atom or the like; R
1
represents C
1
-C
3
alkyl substituted by hydroxyl group or the like; R represents hydrogen atom or a group which regenerates a carboxyl group by hydrolysis in a living body; L represents a single bond, methylene, —OCH
2
(CO)— or the like; and Het represents a group represented by the following formula [2],
wherein m and n independently represent 0 or 1; A and B independently represent methylene, carbonyl or the like; Y represents methylene, ethylene, oxygen atom, —OCH
2
—, —NR
a
CH
2
— (wherein R
a
represents hydrogen atom, optionally substituted C
1
-C
4
alkyl group or the like) or the like.
Visible‐Light‐Mediated C(sp
<sup>3</sup>
)–H Thiocarbonylation for Thiolactam Preparation with Potassium Sulfide
作者:Wei Tan、Cuihong Wang、Xuefeng Jiang
DOI:10.1002/cjoc.201900360
日期:2019.12
thiolactam preparation with potassium sulfide via visible‐light‐mediated C(sp3)–H thiocarbonylation, in which polysulfide dianions and radical anions generated from potassium sulfide were the key active species. A variety of thiolactams were straightforward established under mild conditions. Moreover, it was successfully applied to structural modification of tetrahydroberberine.