Intermolecular stacking in pyrazolo[3,4-<i>d</i>]pyrimidine-based pentamethylene-linked flexible molecules
作者:Kamlakar Avasthi、Sheikh M. Farooq、Ashish K. Tewari、Ashoke Sharon、Prakas R. Maulik
DOI:10.1107/s0108270102020681
日期:2003.1.15
The crystal structures of 1-[5-[4,6-bis(methylsulfanyl)-2H-pyrazolo[3,4-d]pyrimidin-2-yl]pentyl]-6-methylsulfanyl-4-(pyrrolidin-1-yl)-1H-pyrazolo[3,4-d]pyrimidine, C(22)H(29)N(9)S(3), and 6-methylsulfanyl-1-[5-[6-methylsulfanyl-4-(pyrrolidin-1-yl)-2H-pyrazolo[3,4-d]pyrimidin-2-yl]pentyl]-4-(pyrrolidin-1-yl)-1H-pyrazolo[3,4-d]pyrimidine, C(25)H(34)N(10)S(2), which differ in having either a pyrrolidine
1- [5- [4,6-双(甲基硫烷基)-2H-吡唑并[3,4-d]嘧啶-2-基]戊基] -6-甲基硫基-4-(吡咯烷基-1-基)的晶体结构)-1H-吡唑并[3,4-d]嘧啶,C(22)H(29)N(9)S(3)和6-甲基硫烷基-1- [5- [6-甲基硫烷基-4-(吡咯烷酮) -1-基)-2H-吡唑并[3,4-d]嘧啶-2-基]戊基] -4-(吡咯烷-1-基)-1H-吡唑并[3,4-d]嘧啶,C(25 )H(34)N(10)S(2)的区别在于具有吡咯烷取代基或甲基硫烷基,由于吡唑并[3,4-d]嘧啶环之间的芳香族pi-pi相互作用,其分子间堆积。