2-[(1S,2S)-1-ethyl-2-bezyloxypropyl]-2,4-dihydro-4

Will be 4.36kgN '- ((2S, 3S) -2-benzyloxy) pentyl-3-formylhydrazide oxalate(VI)And 45.36 kgDioxane into the 100L glass reactor, Stir, add 3.45kgN, N-diisopropylethylamine. Stirring for 1 to 1.5 hours, Add another 5.47kgPhenyl (4- (4- (4-hydroxy) -1-piperazinyl) phenyl) carbamate(V).After the addition is complete, the temperature is raised to 80 ± 5 ° C for 24 to 30 hours. TLC monitoring.After the reaction is completed, the system is cooled to 15 ~ 25 , 57.79 kg of dichloromethane and 21.81 kg of pure water were added and stirred for 10 to 20 minutes.Collect the lower organic phase and discard the aqueous phase.The organic phase was transferred to a 100 L glass reactor, and 21.81 kg of purified water was added to the autoclave, Stirring for 10 to 20 minutes, standing and stratifying, collecting the lower organic phase and discarding the aqueous phase. The organic phase was transferred to a 100 L glass reactor. Saturated aqueous sodium chloride solution (6.54 kg of sodium chloride was dissolved in purified water 21.81 kg) was added and stirred for 10 to 20 minutes. The layers were allowed to stand and the organic phase was collected and the aqueous phase was discarded.The organic phase was transferred to a 20 L rotary vial, and at a vacuum of -0.08 to -0.1 MPa, Control the temperature of 30 ~ 40 , concentrated to remove the dichloromethane, to the solvent-free distillation. A brown solid was obtained.The solid was transferred to a 100 L glass autoclave, 32.27 kg of methyl t-butyl ether was added, and the mixture was heated to 50 to 60 ° C for 0.5 to 1 hour, cooled to 20 ± 5, and stirred for 2 to 3 hours. Centrifuge the filter to the basicSolvent-free, filter cake with 12.91kg methyl tert-butyl ether leaching, centrifugal rejection to the basic solvent-free effluent. Will be all wet goodsAt a vacuum of -0.08 to -0.1 MPa, Control temperature 40 ~ 50 Drying under reduced pressure 6 to 10 hours. A gray solid5.31kg, that is2 - ((2S, 3S) -2- (benzyl) -3-pentyl) -4- (4- (4-(4-hydroxy) -1-piperazine) phenyl)-2, 4-dihydro-3-dihydro-1, 2, 4-triazol-3-one (III), HPLC purity: 98.8percent, yield: 77.4percentmixture of N′-((2S, 3S)-2-(benzyloxy)pentan-3-yl)formohydrazide compound of formula-17 (45.5 g) obtained in example-13, dioxane (500 ml) added phenyl 4-(4-(4-hydroxyphenyl)piperazin-1-yl)phenylcarbamate compound of formula-19 (50 g) was heated to 90-100° C. Triethylamine (26 g) was added to the reaction mixture at 90-100° C. over a period of 1 hour and stirred for 24 hours at 90-100° C. After completion of the reaction, the reaction mixture was cooled to 25-30° C. and dichloromethane was added to the reaction mixture. Filtered the reaction mixture through hyflow bed and washed with dichloromethane. Water was added to the filtrate. Both organic and aqueous layers were separated and the aqueous layer was extracted with dichloromethane. Both organic layers were combined and washed with 2percent sodium hydroxide solution followed by water, and then with 5percent hydrochloric acid solution followed by water and 5percent NaHCO5 g of compound 2a and 3.8 g of compound 6a were added to dioxane, and the temperature was raised to 85 ° C under argon protection1.5 g of triethylamine was added and the reflux was continued for about 35 hours after completion of the dropwise addition. The solvent was evaporated under reduced pressure and extracted with dichloromethane. The residue was recrystallized from methanol and filtered to give a pale yellow solid in 61percent yield and 95.6percent HPLC purity.Under nitrogen protection, 5.4 g (0.013 mol) of the compound II was added to 100 ml of ethylene glycol dimethyl ether, 5.5 g (0.023 mol) of compound IV, 2.6 g (0.026 mol) of triethylamine were added inone portion under stirring, and the mixture waswarmed to reflux. the reaction trap 24 - 48h, after completion of hot filtration, the filtrate was cooled to 0-5 deg.] C 3-5h crystallization, filtration, and dried to give 1.6g blowing 40-50 deg.] C as a white solid, yieldrate: 22.5percent,

Molecular Weight:513.6
XLogP3:5.2
Hydrogen Bond Donor Count:1
Hydrogen Bond Acceptor Count:6
Rotatable Bond Count:9
Exact Mass:513.27399000
Monoisotopic Mass:513.27399000
Topological Polar Surface Area:71.8
Heavy Atom Count:38
Complexity:766
Defined Atom Stereocenter Count:2
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes