TASK DEFINITION: In this task, you're given a paragraph and title from the research paper. Your task is to classify whether the given title is suitable or not for the research paper based on the given paragraph. Return "True" if title is proper according to paragraph else "False".
PROBLEM: Paragraph: Inspired by bioactive biaryl-containing natural products found in plants and the marine 19 environment, a series of synthetic compounds belonging to the azaBINOL chiral ligand family 20 was evaluated for antiviral activity against HIV-1. Testing of 39 unique azaBINOLs in a single-21 round infectivity assay resulted in the identification of three promising antiviral compounds, 22 including 7-isopropoxy-8-(naphth-1-yl)quinoline (azaBINOL B#24), which exhibited low-23 micromolar activity. The active compounds and several close structural analogues were further 24 tested against three different HIV-1 envelope pseudotyped viruses as well as in a full-virus 25 replication system (EASY-HIT). Mode-of-action studies using a time-of-addition assay indicated 26 that azaBINOL B#24 acts after viral entry but before viral assembly and budding. HIV-1 reverse 27 transcriptase (RT) assays that individually test for polymerase and RNase H activity were used to 28 demonstrate that B#24 inhibits RNase H activity, most likely allosterically. Further binding 29 analysis using bio-layer interferometry (BLI) showed that B#24 interacts with HIV-1 RT in a 30 highly specific manner. These results indicate that azaBINOL B#24 is a potentially viable, novel 31
Title: Biological Evaluation of Molecules of the azaBINOL Class as Antiviral Agents: 1 Specific Inhibition of HIV-1 RNase H Activity by 7-Isopropoxy-8-(naphth-1-yl)quinoline 2 3 4 5

SOLUTION: False

PROBLEM: Paragraph: A major entry route for the gammaretrovirus amphotropic murine leukemia virus (A-MLV) into NIH 3T3 fibroblasts is via caveola-dependent endocytosis. However, during the infection time, few viral particles can be observed intracellularly. Analyzing the dynamics of the A-MLV infection process by using total internal reflection fluorescence microscopy, we show that the majority of viruses are extracellular and bound to the fibronectin matrix. Moreover, the amounts of bound virus and of fibronectin correlated. Using confocal microscopy, nanoparticles targeted to fibronectin by a III1C-fibronectin fragment or anti-fibronectin antibody were detected intracellularly in NIH 3T3 cells; unconjugated nanoparticles neither bound to cells nor were detectable intracellularly. Furthermore, A-MLV colocalized intracellularly with the fibronectin-targeted nanoparticles, suggesting that they were taken up by the same cellular pathway. Both A-MLV entry and fibronectin turnover depend on caveolar endocytosis, and we found that inhibiting viral binding to the extracellular NIH 3T3 fibronectin-matrix dramatically reduced A-MLV infection, indeed, showing an active role of fibronectin in infection. We suggest that binding to the cellular fibronectin matrix provides a new mechanism by which viruses can enter cells.
Title: Matrix Fibronectin Binds Gammaretrovirus and Assists in Entry: New Light on Viral Infections Downloaded from

SOLUTION: True

PROBLEM: Paragraph: Phenanthroquinolizidine alkaloids a b s t r a c t The stereoselective synthesis of epi-thieno analogues of the phenanthroquinolizidine bioactive alkaloids (A)-Cryptopleurine and (A)-(15R)-Hydroxycryptopleurine was achieved in five steps starting from easily available enantiopure (S)-2-aminoadipic acid used as chiral pool and nitrogen atom source. During these investigations, both p-cationic cyclization of chiral N-thienylmethyl-6-oxopipecolinic acids into pure (S)keto-lactams and theirs regioselective and diastereoselective reduction, considered as key steps of this sequence, were studied. Of particular interest, the FriedeleCrafts cyclization using (CF 3 CO) 2 O/BF 3 $Et 2 O show that near the expected keto-lactams, enamides and enamidones containing trifluoromethyl residue were isolated. A mechanism leading to the latter products with high synthetic potential was discussed.
Title: Use of chiral-pool approach into epi-thieno analogues of the scarce bioactive phenanthroquinolizidine alkaloids

SOLUTION:
False