Znn3bq.jpeg
²é¿´: 692  |  »Ø¸´: 4
±¾Ìû²úÉú 1 ¸ö ·­ÒëEPI £¬µã»÷ÕâÀï½øÐв鿴

huchengc

ľ³æ (ÕýʽдÊÖ)

[½»Á÷] Çó·­ÒëÒ»¶ÎÎÄÏ×

An enzymatically cleavable ester functionality was readily introduced in proximity to the C4 stereogenic center at N3 by hydroxymethylation with formaldehyde,
followed by standard acetylation with acetyl chloride.
     The resulting N3-acetoxymethyl activated DHPM (rac)-6 was obtained in ca. 80% overall yield and high purity from 4 as a single regioisomer (no N1- or bis-functionalized products could be detected).

» ²ÂÄãϲ»¶

ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

dd99835

ľ³æ (ÕýʽдÊÖ)

huchengc(½ð±Ò+1, ·­ÒëEPI+1): 2010-09-27 12:20:37
N3ÉϵÄC4½á¹¹µÄ¼×È©ôǼ׻ù»¯×÷ÓÃÈÝÒ×ÓÉøÁѽâõ¥×÷ÓÃÒýÆð£¬·ûºÏÒÒõ£Âȵıê×¼ÒÒõ£»¯×÷Óᣵõ½µÄN3-ÒÒõ£¼×»ù»îÐÔ DHPM-6 µÄ²úÂÊΪ80%£¬Æä¸ß´¿¶ÈÊÇÓÉÓÚ4ÊÇΨһµÄÒì¹¹Ì壨ûÓÐN1-»òÕßË«¹ÙÄÜÍŵIJúÎï±»²âµ½¡££©¡£
2Â¥2010-09-27 08:48:47
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

nyiwmy

ľ³æ (ÕýʽдÊÖ)

huchengc(½ð±Ò+29): 2010-09-27 12:20:52
ÊÖÐÔÖÐÐÄC4Ô­×Ó¸½½üµÄN3Ô­×Ó£¬Í¨¹ý¼×È©µÄôǼ׻ù»¯·´Ó¦£¬¿ÉÒÔÎȶ¨µÄÒýÈëø·Ö½âõ¥µÄ¹ÙÄÜÐÔ£¨¾ÍÊÇ˵£¬¿ÉÒÔ½øÐÐÓÉø´ß»¯·Ö½âõ¥µÄ·´Ó¦£©£¬È»ºóÓëÒÒõ£ÂȽøÐбê×¼µÄÒÒõ£»¯·´Ó¦¡£
Óɵ¥Ò»ÇøÓòÒì¹¹Ìå4ÖÆµÃµÄN3-ÒÒõ£Ñõ¼×»ù»î»¯µÄDHPM£¨ÏûÐý£©-6£¬´óÔ¼×ÜÊÕÂÊÄܵ½80%£¨Ã»Óмì²âµ½N1-»òÕßË«-¹ÙÄÜÍÅ»¯²úÆ·£©¡£
3Â¥2010-09-27 09:16:25
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

nyiwmy

ľ³æ (ÕýʽдÊÖ)

80%ºóÃæÂ©ÁËÒ»¾ä¡¾ÇÒ´¿¶È¸ß¡¿¡£¡£ºÇºÇ
4Â¥2010-09-27 09:20:03
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

huchengc

ľ³æ (ÕýʽдÊÖ)

л¥ÉÏ
5Â¥2010-09-27 12:22:44
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ huchengc µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] ÊÕµ½¸´ÊÔµ÷¼Áµ«ÊÇÈ¥²»ÁË +7 СÎÏÅ£* 2026-04-16 7/350 2026-04-18 09:24 by Ï£ÍûÎҺúõÄ
[¿¼ÑÐ] ¼±Ðèµ÷¼Á +9 ¾ø²»·ÅÆú22 2026-04-15 10/500 2026-04-18 08:09 by chixmc
[¿¼ÑÐ] 304Çóµ÷¼Á +7 castLight 2026-04-16 7/350 2026-04-17 20:05 by ¹ØÒ»ÕµµÆcd
[¿¼²©] Ç󲩵¼£üÉúÎïÖÊ»ù¶à¿×̼/³¬¼¶µçÈÝ·½Ïò£¬ÒÑÓÐÏà¹Ø³É¹û£¬Ñ°ÄÜÔ´²ÄÁÏ/̼²ÄÁÏ·½ÏòÀÏʦ +3 ÖíÖíÈËZzz 2026-04-12 3/150 2026-04-17 19:10 by ÑôÑôÑô^_^
[¿¼ÑÐ] ¿ÒÇëÓÐѧУÊÕÁô +8 ¿Â»´È» 2026-04-12 8/400 2026-04-17 09:34 by Öí»á·É
[¿¼ÑÐ] 297£¬¹¤¿Æµ÷¼Á? +4 ºÓÄÏũҵ´óѧ-ÄÜ 2026-04-14 4/200 2026-04-16 22:52 by wulijun2012
[¿¼ÑÐ] Ò»Ö¾Ô¸»¦9£¬ÉúÎïѧ326Çóµ÷¼Á +9 Áõīī 2026-04-15 9/450 2026-04-16 17:14 by ´Þ´Þ´Þcccc
[¿¼ÑÐ] 289 ·Ö105500ҩѧר˶Çóµ÷¼Á(ÕÒBÇøÑ§Ð£) +4 °×ÔÆ123456789 2026-04-13 4/200 2026-04-16 00:18 by ·ÛÇßÈô³¾
[¿¼ÑÐ] ҩѧÇóµ÷¼Á +11 RussHu 2026-04-12 13/650 2026-04-15 19:07 by zhuwenxu
[¿¼ÑÐ] ¸÷λÀÏʦºÃ£¬Çóµ÷¼Á£¬±¾¿Æ211£¬Ò»Ö¾Ô¸Ìì½ò´óѧÉúÎïÓëҽҩѧ˶£¬²îÁ½Ãû¼ȡ¡£ +11 ·ÁùÁùjjj 2026-04-13 11/550 2026-04-14 16:01 by zs92450
[¿¼ÑÐ] Çóµ÷¼Á +12 ºÎÆøÕý 2026-04-13 13/650 2026-04-14 14:47 by zs92450
[¿¼ÑÐ] ʳƷÓëÓªÑø£¨0955£©271Çóµ÷¼Á +15 Éý¸ñ°¢´ï 2026-04-12 16/800 2026-04-14 13:18 by ¸¡Èô_°²Éú
[¿¼ÑÐ] 2026˶ʿµ÷¼Á_Äܶ¯_ºÓÄÏũҵ´óѧ +4 ºÓÄÏũҵ´óѧ-ÄÜ 2026-04-12 4/200 2026-04-13 22:01 by bljnqdcc
[¿¼ÑÐ] 293Çóµ÷¼Á +16 ÎÒ°®¸ßÊý¸ßÊý°®Î 2026-04-12 18/900 2026-04-13 21:47 by ѧԱJpLReM
[¿¼ÑÐ] Ò»Ö¾Ô¸085802 323·ÖÇóµ÷¼Á +13 drizzle_9 2026-04-12 14/700 2026-04-13 10:26 by Faiz5552
[¿¼ÑÐ] 344 ²ÄÁÏרҵ Çóµ÷¼Á211 ÎÞµØÓòÒªÇó +8 hualkop 2026-04-11 8/400 2026-04-12 22:24 by fqwang
[¿¼ÑÐ] 346·Ö£¬¹¤¿Æ0854Çóµ÷¼Á£¬×¨Ë¶ +6 moser233 2026-04-12 7/350 2026-04-12 22:11 by fqwang
[¿¼ÑÐ] 339Çóµ÷¼Á +8 hanwudada 2026-04-11 9/450 2026-04-12 15:36 by laoshidan
[¿¼ÑÐ] 270Çóµ÷¼Á +14 ÑîÀÖ369 2026-04-11 14/700 2026-04-11 20:16 by À¶ÔÆË¼Óê
[¿¼ÑÐ] 359Çóµ÷¼Á +5 θ¾·ÂÎÀÛÁË 2026-04-11 5/250 2026-04-11 19:55 by lbsjt
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û