Synthesis of sulfazecin-type 2-azetidinones with a carbon substituent at the 4-position.
نویسندگان
چکیده
منابع مشابه
Synthesis of sulfazecin-type 2-azetidinones with a carbon substituent at the 4-position.
Sir: As reported in our previous paper,1) chemical modification of sulfazecin2) at the 3-position significantly enhanced its antibacterial activity; however, further improvement was desired especially in regard to the stability to some p-lactamases. We focused our attention on modifying the unexplored 4-position, and cis-1-(2,4dimethoxybenzyl)4methoxycarbonyl3 -phthalimido-2-azetidinone (1a) wa...
متن کاملthe investigation of the relationship between type a and type b personalities and quality of translation
چکیده ندارد.
Synthesis of Phthalocyanines with a Pentafluorosulfanyl Substituent at Peripheral Positions
The pentafluorosulfanyl (SF5) group is more electronegative, lipophilic and sterically bulky relative to the well-explored trifluoromethyl (CF3) group. As such, the SF5 group could offer access to pharmaceuticals, agrochemicals and optoelectronic materials with novel properties. Here, the first synthesis of phthalocyanines (Pcs), a class of compounds used as dyes and with potential as photodyna...
متن کاملan investigation of the types of text reduction in subtitling: a case study of the persian film gilaneh with english subtitles
چکیده ندارد.
15 صفحه اولSynthesis and Antifungal Activity of Some Azetidinones
Ethyl-1H-benzotriazol-1-acetate 2 was prepared by reacting 1H-benzotriazole 1 in alcohol with ethyl bromoacetate in presence of anhydrous potassium carbonate, which was treated with hydrazine hydrate under reflux for 1824 hours to obtain the intermediate 1H-benzotriazole-1-acetic acid hydrazide 3. This compound on Schiff’s reaction with aromatic aldehydes in presence of solvent mixture yielded ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Journal of Antibiotics
سال: 1983
ISSN: 0021-8820,1881-1469
DOI: 10.7164/antibiotics.36.1421