²é¿´: 664  |  »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] 265Çóµ÷¼Á +8 ÁºÁºÐ£Ð£ 2026-03-17 8/400 2026-03-20 14:40 by 27µÀ¿ÆÌØ
[¿¼ÑÐ] Ò»Ö¾Ô¸ ÄϾ©º½¿Õº½Ìì´óѧ´óѧ £¬080500²ÄÁÏ¿ÆÑ§Ó빤³Ìѧ˶ +4 @taotao 2026-03-20 4/200 2026-03-20 10:37 by EBSD
[¿¼²©] É격26Äê +3 °Ë6°Ë68 2026-03-19 3/150 2026-03-19 19:43 by nxgogo
[¿¼ÑÐ] 321Çóµ÷¼Á +8 ºÎÈó²É123 2026-03-18 10/500 2026-03-19 16:46 by ºÎÈó²É123
[¿¼ÑÐ] 085600²ÄÁÏÓ뻯¹¤µ÷¼Á 324·Ö +10 llllkkkhh 2026-03-18 12/600 2026-03-19 14:33 by llllkkkhh
[¿¼ÑÐ] ²ÄÁÏ¿¼Ñе÷¼Á +3 xwt¡£ 2026-03-19 3/150 2026-03-19 11:22 by wãåÑôw
[¿¼ÑÐ] 346Çóµ÷¼Á[0856] +3 WayneLim327 2026-03-16 6/300 2026-03-19 11:21 by WayneLim327
[¿¼ÑÐ] 304Çóµ÷¼Á +6 ˾¿Õ. 2026-03-18 6/300 2026-03-18 23:03 by ÐÇ¿ÕÐÇÔÂ
[¿¼ÑÐ] ²ÄÁÏרҵÇóµ÷¼Á +5 hanamiko 2026-03-18 5/250 2026-03-18 20:19 by ÐÇ¿ÕÐÇÔÂ
[¿¼ÑÐ] ²ÄÁÏ£¬·ÄÖ¯£¬ÉúÎ0856¡¢0710£©£¬»¯Ñ§ÕÐÉúÀ² +3 Eember. 2026-03-17 9/450 2026-03-18 10:28 by Eember.
[¿¼ÑÐ] 277µ÷¼Á +5 ×ÔÓɼå±ý¹û×Ó 2026-03-16 6/300 2026-03-17 19:26 by Àîleezz
[¿¼ÑÐ] 326Çóµ÷¼Á +5 Éϰ¶µÄСÆÏ 2026-03-15 6/300 2026-03-17 17:26 by ruiyingmiao
[¿¼ÑÐ] ÓÐûÓеÀÌú/ÍÁľµÄÏëµ÷¼ÁÄÏÁÖ£¬¸ø×Ô¼ºÕÐʦµÜÖС« +3 TqlXswl 2026-03-16 7/350 2026-03-17 15:23 by TqlXswl
[¿¼ÑÐ] Ò»Ö¾Ô¸ËÕÖÝ´óѧ²ÄÁϹ¤³Ì£¨085601£©×¨Ë¶ÓпÆÑо­ÀúÈýÏî¹ú½±Á½¸öʵÓÃÐÍרÀûÒ»ÏîÊ¡¼¶Á¢Ïî +6 ´ó»ðɽС»ðɽ 2026-03-16 8/400 2026-03-17 15:05 by ÎÞи¿É»÷111
[¿¼ÑÐ] [µ¼Ê¦ÍƼö]Î÷ÄϿƼ¼´óѧ¹ú·À/²ÄÁϵ¼Ê¦ÍƼö +3 ¼â½ÇСºÉ 2026-03-16 6/300 2026-03-16 23:21 by ¼â½ÇСºÉ
[¿¼ÑÐ] ҩѧ383 Çóµ÷¼Á +3 ҩѧchy 2026-03-15 4/200 2026-03-16 20:51 by Ôª×Ó^0^
[¿¼ÑÐ] »úеר˶325£¬Ñ°ÕÒµ÷¼ÁԺУ +3 y9999 2026-03-15 5/250 2026-03-16 19:58 by y9999
[¿¼ÑÐ] 0854¿ØÖƹ¤³Ì 359Çóµ÷¼Á ¿É¿çרҵ +3 626776879 2026-03-14 9/450 2026-03-16 17:42 by 626776879
[¿¼ÑÐ] 0703 ÎïÀí»¯Ñ§µ÷¼Á +3 ÎÒ¿ÉÒÔÉϰ¶µÄ¶Ô 2026-03-13 5/250 2026-03-16 10:50 by ÎÒ¿ÉÒÔÉϰ¶µÄ¶ÔÂ
[¿¼ÑÐ] 0856ר˶279Çóµ÷¼Á +5 ¼ÓÓͼÓÓÍ£¡? 2026-03-15 5/250 2026-03-15 11:58 by 2020015
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û