Total synthesis of microginin, an angiotensin-converting enzyme inhibitory pentapeptide from the blue-green alga Microcystis aeruginosa
摘要:
Microginin, an angiotensin-converting enzyme inhibitory peptide isolated form the blue-green alga Microcystis aeruginosa, and its three diastereoisomers were efficiently synthesized, which unequivocally established the absolute stereostructure of microginin to be 1d.
Convergent synthesis of cis-α,β-epoxy-carboxylic acids from 1-halo-2-trimethylsilyloxy-3-aza-4-phenyl-1,3-butadiene
摘要:
Reaction of a wide variety of aldehydes with the easily prepared 2-azadienes, in the presence of BF3 etherate, furnishes the corresponding hetero Diels-Alder adducts which have been converted, mainly, to cis epoxides via N-Boc protection followed by one-pot two-step ring opening and nucleophilic displacement of the halogen atom, resulting in final formation of an oxirane ling. (C) 2004 Elsevier Ltd. All rights reserved.
2,3-epoxy derivatives as anti retrovital chemotherapeutic agents
申请人:The United States of America as represented by the Secretary of the
公开号:US05190969A1
公开(公告)日:1993-03-02
The present invention is related to compounds, compositions and methods of treating viral infections. Compounds of the present invention have the following general formula: ##STR1## wherein R is selected from --CH.sub.2 OH, --CO.sub.2 R.sup.2, --CONR.sup.3 R.sup.4, or COR.sup.5, wherein R.sup.2 is hydrogen or a lower alkyl group, R.sup.3 and R.sup.4 are each independently hydrogen or a lower alkyl group, R.sup.5 is an amino acid residue bound via a terminal nitrogen or peptide having at least two amino acid residues; and wherein R.sup.1 is C.sub.5 -C.sub.13 alkyl, aryl, aralkyl, aralkyl(lower alkyl) ether, or C.sub.5 -C.sub.13 alkyl (lower alkyl)ether.
2,3-epoxy alcohols, acids and derivatives as anti retroviral
申请人:The United States of America as represented by the Department of Health
公开号:US06153589A1
公开(公告)日:2000-11-28
The present invention is related to compounds, compositions and methods of treating viral infections. Compounds of the present invention have the following general formula: ##STR1## wherein R is selected from --CH.sub.2 OH, --CO.sub.2 R.sup.2, --CONR.sup.3 R.sup.4, or COR.sup.5, wherein R.sup.2 is hydrogen or a lower alkyl group, R.sup.3 and R.sup.4 are each independently hydrogen or a lower alkyl group, R.sup.5 is an amino acid residue bound via a terminal nitrogen or peptide having at least two amino acid residues; and wherein R.sup.1 is C.sub.5 -C.sub.13 alkyl, aryl, aralkyl, aralkyl(lower alkyl)ether, or C.sub.5 -C.sub.13 alkyl(lower alkyl)ether.