Insight into Transannular Cyclization Reactions To Synthesize Azabicyclo[<i>X</i>.<i>Y</i>.<i>Z</i>]alkanone Amino Acid Derivatives from 8-, 9-, and 10-Membered Macrocyclic Dipeptide Lactams
作者:N. D. Prasad Atmuri、William D. Lubell
DOI:10.1021/acs.joc.5b00237
日期:2015.5.15
An efficient method for synthesizing different functionalized azabicyclo[X.Y.0]alkanone amino acid derivatives has been developed employing electrophilic transannularcyclizations of 8-, 9-, and 10-membered unsaturated macrocycles to form 5,5-, 6,5-, 7,5-, and 6,6-fused bicylic amino acids, respectively. Macrocycles were obtained by a sequence featuring peptide coupling of vinyl-, allyl-, homoallyl-
Design, synthesis and biological evaluation of C(4) substituted monobactams as antibacterial agents against multidrug-resistant Gram-negative bacteria
作者:Qunhuan Kou、Ting Wang、Feng Zou、Shuhua Zhang、Qian Chen、Yushe Yang
DOI:10.1016/j.ejmech.2018.03.058
日期:2018.5
A series of novel pyridone conjugated monobactams with various substituents at the (4) position were synthesized and evaluated for their antibacterialactivities against a panel of multidrug-resistant (MDR) Gram-negative bacteria in vitro. Compounds 46d, 54 and 75e displayed good to moderate activities against P. aeruginosa, among which the activity of 75e against P. aeruginosa was comparable to that
the concise total synthesis of eight natural products of the mugineic acid and avenic acid families (phytosiderophores). An innovative „east‐to‐west“ assembly of the trimeric products resulted in a high degree of divergence enabling the formation of the final products in just 10 or 11 steps each with a minimum of overall synthetic effort. Chiral pool starting materials (l‐malic acid, threonines) were
COMPOUNDS AS L-CYSTINE CRYSTALLIZATION INHIBITORS AND USES THEREOF
申请人:WARD Michael D.
公开号:US20180305307A1
公开(公告)日:2018-10-25
A method of preventing or inhibiting L-cystine crystallization is disclosed, using the compounds of formula I:
R
1a
—[O]
v
-(-A-L-)
m
-A-[O]
v
—R
1b
wherein A, L, R
1a
, R
1b
, m, and v are as described herein. The compounds may be prepared as pharmaceutical compositions, and may be used for the prevention and treatment of conditions that are causally related to L-cystine crystallization, such as comprising (but not limited to) kidney stones.
[EN] HIV PROTEASE INHIBITORS<br/>[FR] INHIBITEURS DE LA PROTÉASE DU VIH
申请人:MERCK & CO INC
公开号:WO2009042093A1
公开(公告)日:2009-04-02
Compounds of Formula I are disclosed: (I), wherein XA, k, R1, R2, R3, R4, R5, R5A, R6, R6A, R7 and R8 are defined herein. The compounds encompassed by Formula I include compounds which are HIV protease inhibitors and other compounds which can be metabolized in vivo to HIV protease inhibitors. The compounds and their pharmaceutically acceptable salts are useful for the prophylaxis or treatment of infection by HIV and the prophylaxis, treatment, or delay in the onset of AIDS. The compounds and their salts can be employed as ingredients in pharmaceutical compositions, optionally in combination with other antivirals, immunomodulators, antibiotics or vaccines.