2-trimethylsilylethyl 2-[(4R,5S,10S,15R,18S,21R,24R,27S,29R,37S)-37-[tert-butyl(dimethyl)silyl]oxy-33-[(1S)-1-[tert-butyl(dimethyl)silyl]oxyethyl]-4,18-dimethyl-5-[(2-methylpropan-2-yl)oxycarbonylamino]-2,17,20,23,26-pentaoxo-21,24-bis(phenylselanylmethyl)-27-propan-2-yl-15-[4-(2-trimethylsilylethoxycarbonyl)-1,3-thiazol-2-yl]-3-oxa-7-thia-11,16,19,22,25,28,35,38-octazapentacyclo[27.5.3.16,9.010,15.032,36]octatriaconta-1(35),6(38),8,11,30,32(36),33-heptaen-12-yl]-1,3-thiazole-4-carboxylate 、
2-[(1S,2S,3R)-1-[[(2R)-3-hydroxy-2-[[(2R,3S)-3-phenylselanyl-2-[[(4S,5R)-2,2,5-trimethyl-3-(2-trimethylsilylethoxycarbonyl)-1,3-oxazolidine-4-carbonyl]amino]butanethioyl]amino]propanoyl]amino]-2-methyl-2,3-bis(triethylsilyloxy)butyl]-1,3-thiazole-4-carboxylic acid 在
盐酸 、
N,N-二异丙基乙胺 、 N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate 作用下,
以
1,4-二氧六环 、
二氯甲烷 为溶剂,
反应 6.92h,
以60%的产率得到2-trimethylsilylethyl (4S,5R)-4-[[(2R,3S)-1-[[(2R)-1-[[(1S,2S,3R)-1-[4-[[(4R,5S,10S,15R,18S,21R,24R,27S,29R,37S)-33-[(1S)-1-[tert-butyl(dimethyl)silyl]oxyethyl]-37-hydroxy-4,18-dimethyl-2,17,20,23,26-pentaoxo-21,24-bis(phenylselanylmethyl)-27-propan-2-yl-12,15-bis[4-(2-trimethylsilylethoxycarbonyl)-1,3-thiazol-2-yl]-3-oxa-7-thia-11,16,19,22,25,28,35,38-octazapentacyclo[27.5.3.16,9.010,15.032,36]octatriaconta-1(35),6(38),8,11,30,32(36),33-heptaen-5-yl]carbamoyl]-1,3-thiazol-2-yl]-2-methyl-2,3-bis(triethylsilyloxy)butyl]amino]-3-hydroxy-1-oxopropan-2-yl]amino]-3-phenylselanyl-1-sulfanylidenebutan-2-yl]carbamoyl]-2,2,5-trimethyl-1,3-oxazolidine-3-carboxylate