(2-aminoethyl)hydrazine 、 草酸二甲酯 在
水合甲醇 作用下,
以
甲醇 为溶剂,
反应 1.0h,
以by wt. of 1-amino-2,3-dioxopiperazine of decomp. pt. 240°-243° C. are obtained的产率得到1-氨基哌嗪-2,3-二酮
参考文献:
名称:
Dioxopiperazine derivatives suitable for use as medicaments and
Antibacterial activity is exhibited by .beta.-lactams having a 3-acylamino substituent and having in the 1-position an activating group of the formula ##STR1## wherein R is
Antibacterial activity is exhibited by 2-azetidinones having a 3-acylamino substituent and having an activating group in the 1-position of the formula ##STR1##
具有3-酰胺取代基和在式子##STR1##的1-位置有活化基团的2-氮杂环己酮表现出抗菌活性。
Dioxopiperazine derivatives suitable for use as medicaments and
申请人:Bayer Aktiengesellschaft
公开号:US04182762A1
公开(公告)日:1980-01-08
New dioxo-piperazine derivatives suitable for use as medicaments and .beta.-lactam antibiotic intermediates of the formula ##STR1## in which Z is ##STR2## and, R.sup.1 and R.sup.2 each independently is hydrogen or various optionally substituted aliphatic, aromatic or heterocyclic radicals or together form an optionally substituted ring, are formed by reacting (a) 1-amino-2,3-dioxo-piperazine of the formula ##STR3## with a compound of the formula ##STR4## or a hydrate, acetal, ketal, sulphite, hydrogen halide or hydrocyanic acid addition product thereof or, ##STR5## with an oxalic acid ester in the presence of a diluent, thereby to effect cyclization. The new derivatives are anti-virally active and can also be chlorocarbonated with phosgene to form a reactive derivative which can be condensed with the amino group of .alpha.-amino penicillins to form antibiotics.