تفاعل #61309

معادلة التفاعل

H7

(rac.)-(1R*,5S*)-7-{4-[2-(tert-Butyldimethylsilanyloxy)ethoxy]phenyl}-3,9-diazabicyclo[3.3.1]non-6-ene-3,6,9-tricarboxylic acid 3-tert-butyl ester 6-ethyl ester 9-(2,2,2-trichloro-1,1-dimethylethyl) ester

DIPEA

acetyl chloride

HCl dioxane

→

(rac.)-(1R*,5S*)-3-Acetyl-7-[4-(2-hydroxyethoxy)phenyl]-3,9-diazabicyclo-[3.3.1]non-6-ene-6,9-dicarboxylic acid 6-ethyl ester 9-(2,2,2-trichloro-1,1-dimethylethyl) ester

المذيبات

MeOH

THF

CH2Cl2

ظروف التفاعل

المعالجة

1. 1
   أخرىPurification of the residue by FC (EtOAc/heptane 1:1→EtOAc MeOH/EtOAc 1:9)

الإجراء التجريبي

As for compound S1, from H7 (5.80 g, 7.73 mmol), CH2Cl2 (60 mL), 4M HCl/dioxane (60 mL), THF (50 mL), DMAP (47 mg, 0.384 mmol), DIPEA (5.29 mL, 31.7 mmol), acetyl chloride (0.604 mL, 8.08 mmol), and MeOH (5 mL). Purification of the residue by FC (EtOAc/heptane 1:1→EtOAc MeOH/EtOAc 1:9) led to the title compound (3.07 g, 69%). Rf=0.20 (EtOAc). LC-MS: Rt=4.80; ES+: 576.93.

المصدر