نتایج جستجو برای: furan 2 5h ones
تعداد نتایج: 2618986 فیلتر نتایج به سال:
The title compound, C(20)H(30)ClNO(3), was obtained via a tandem asymmetric Michael addition-elimination reaction of (5S)-3,4-dichloro-5-(l-menth-yloxy)-2(5H)-furan-one and diallyl-amine in the presence of potassium fluoride. The mol-ecular structure contains an approximately planar five-membered furan-one ring [maximum atomic deviation = 0.0221 (3) Å] and a six-membered ring adopting a chair c...
The title compound, C(17)H(26)ClNO(5), was prepared via a tandem asymmetric Michael addition-elimination reaction of (5S)-3,4-dichloro-5-(l-menth-yloxy)furan-2(5H)--one and l-alanine in the presence of potassium hydroxide. The five-membered furan-one ring is approximately planar while the six-membered menth-yloxy ring adopts a chair conformation. The crystal packing is stabilized by inter-molec...
The title compound, C(19)H(30)ClNO(5), was obtained by the tandem asymmetric Michael addition-elimination reaction of (5S)-3,4-dichloro-5-(l-menth-yloxy)furan-2(5H)-one and l-valine in the presence of potassium hydroxide. The furan-one unit is approximately planar (r.m.s. deviation = 0.0204 Å) and the six-membered cyclo-hexane ring adopts a chair conformation. The crystal structure is stabilize...
The title compound, C(20)H(16)N(2)O(4)S, was prepared by introduction of a 2-nitro-benzyl group to 2-(furan-2-yl)-2,3-dihydro-1,5-benzothia-zepin-4(5H)-one via an alkaline-catalysed reaction. The thia-zepine ring adopts a twist-boat conformation. The furan ring is oriented at dihedral angles of 56.75 (14) and 10.82 (14)° with respect to the two benzene rings, while the two benzene rings make a ...
In the title compound, C(19)H(19)NO(5), the furan-one unit makes a dihedral angle of 30.93 (6)° with the benzene ring and a dihedral angle of 9.51 (6)° with the aniline ring. In the crystal, inter-molecular C-H⋯O hydrogen bonds and C-H⋯π contacts link the mol-ecules into sheets. A weak intramolecular hydrogen bond is also observed.
The title compound, C(20)H(33)ClN(2)O(3), was obtained via a tandem asymmetric Michael addition-elimination reaction of 3,4-dichloro-5-(S)-(l-menth-yloxy)furan-2(5H)-one and 1-ethyl-piperazine in the presence of potassium fluoride. The mol-ecular structure contains an approximately planar five-membered furan-one ring [maximum atomic deviation = 0.024 (2) Å] and two six-membered rings adopting c...
Guided bone regeneration involves excluding non-osteogenic cells from the surrounding soft tissues and allowing osteogenic originating native to inhabit defect. The aim of this work was fabricate, analyze antibiofilm activity evaluate in vivo biological response poly (lactic-co-glycolic acid) (PLGA) electrospun membranes incorporated with tea tree oil furan-2(5H)-one. Samples were exposed Strep...
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