1-( tert -Butoksikarbonil)-2-( R )-( N , N -dietilaminokarbonil)-pirolidin ( 19 ).Och sariq moy, 73%, TLC (eluent: dietil efir/PE 70 : 30 v/v): R f = 0,78; 1 H NMR (500 MHz, CDCl 3 ) ikkita konformator (59*:41) d : 4,53 (dd, J = 7,8 Hz, J = 3,0 Hz, 1H, CHCO), 4,38* (dd, J = 8,4 Hz, J = 3,8 Hz, 1H, CHCO), 3,60-3,11 (m, 6H, CH 2 C 2 NCO, C 2 CH 3 ), 2,19-1,90 (m, 2H, C 2 CH 2 CHCO), 1,86-1,68 (m, 2H, C 2 CH 2 CHCO), 1,38 va 1,34* (2s, 9H, t Bu), 1,22-1,13 (m, 3H, C) 3 CH 2 N), 1,10-1,01 (m, 3H, C 3 CH 2 N); 13 C NMR (126 MGts, CDCl 3 ) δ 172.10, 154,60, 154,03 *, 79,53 *, 79,28, 56,62 *, 56,35, 46,95, 41,78, 40,96, 31,34 *, 30,31, 28,58, 24,27, 23,44 *, 14,76, 13.14; MS (EI, 70 eV) m / z (% nisbiy): 270 [M + ˙] (1), 197 (19), 170 (40), 114 (94), 100 (30), 70 (100) , 57 (45). Analiz. C 14 H 26 N 2 O 3 uchun hisoblangan: C, 62.19; H, 9,69; N, 10.36. Topilgan: C, 62,23; H, 9,63; N, 10.31.
Dipeptid metil 3-metil-2-( S )-(2-( R )-(4-nitrofenilsulfonamido)-propanamido)butanoat sintezi ( 20 )
1 mmol 2-( S )-(4-nitrofenilsulfonamido)propanoy kislotasi 1 mmol ( S )-metil 2-amino-3-metilbutanoat gidroxlorid va 5 mmol trietilamin (Et 3 N) ga diklorometanga qo'shiladi, keyin 1. xona haroratida mmol SOCl 2 qo'shiladi. Aralash xona haroratida 40 daqiqa davomida aralashtiriladi. Reaktsiya mahsulotining tiklanishi erituvchini past bosim ostida bug'lantirish orqali amalga oshiriladi. Olingan qoldiq diklorometanga olinib, avval 1 n HCl, keyin esa 1 n NaOH bilan yuviladi. Organik faza quritilgan (Na 2 SO 4 ) va mos keladigan dipeptid 20 ni olish uchun quruqlikka qadar bug'langan .
Oq qattiq, 65%; mp 144–148 °C; TLC (eluent: xloroform/metanol 90 : 10 v/v): R f = 0,53; 1 H NMR (500 MHz, CDCl 3 ) d : d 8,27 (d, J = 8,8 Gts, 2H, ArH), 8,00 (d, J = 8,8 Gts, 2H, ArH), 6,47 (d, J = 8,7 Gts, 1H, N SO 2 ArH), 5,93 (d, J = 8,5 Gts, 1H, N CHCOOCH 3 ), 4,31 (dd, J = 8,5 Gts, J = 4,8 Gts, 1H, CHCOOCH 3 ), 4,02-3,91 (m, 1H, NHC (CH 3 )CO, 3.69 (s, 3H, OCH 3 )), 2,12-2,04 (m, 1H, CH(CH 3 ) 2 ), 1,33 (d, J = 7,1 Gts, 3H, CH 3 CH), 0,84 (d, J = 6,9 Gts, 3H, CH (CH 3 ) 2 ), 0,80 (t, J = 6,9 Hz, 3H, CH (CH 3 ) 2 ). 13 C NMR (126 MHz, CDCl 3 ) d 172,31, 171,13, 150,35, 145,75, 128,68, 124,60, 57,22, 52,88, 52,61, 321,77, 31,940.; MS (EI, 70 eV) m / z (% nisbiy): 328 [M + ˙ - COOMe] (28), 274 (8), 229 (100), 186 (27), 130 (27), 122 ( 21), 72 (14). Analiz. C 15 H uchun hisoblangan21 N 3 O 7 S: C, 46,50; H, 5,46; N, 10,85; S, 8.28. Topilgan: C, 46,38; H, 5,48; N, 10,90; S, 8.26.
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