3-酰基异恶唑芳基的热重排使得可以容易地制备2 H -1,2,3-三唑,其首先与亚硝酸异戊酯反应,然后与适当的芳基react反应生成相应的α-羟基亚氨基hydr 8a-h。化合物8a-h与五氯化磷反应,得到所需的4,4'-双三唑1a-h。α-羟基亚氨基酮衍生物7或α-二酮14易于与1,2-苯二胺反应,得到在位置4带有喹喔啉部分的1,2,3-三唑2a-c。提高了喹喔啉2a-c的产率当1,2-苯二胺与二肟15反应时获得
Increased hsp22 RNA Levels in Drosophila Lines Genetically Selected for Increased Longevity
作者:R. Kurapati、H. B. Passananti、M. R. Rose、J. Tower
DOI:10.1093/gerona/55.11.b552
日期:2000.11.1
RNAs for the small heat shock protein (hsp) genes hsp22 and hsp23 are induced during Drosophila aging, suggesting that these genes might have specific functions at late ages. To determine if hsp22 and hsp23 gene expression might correlate with life span, RNA levels for these and additional genes were analyzed throughout the adult life span in a set of five outbred "O" lines, which have been genetically selected for increased longevity, and in five matched control "B" lines. Control ribosomal protein genes rp49 and AP3/RpPO RNA levels were similar in O and B lines. In contrast, hsp22 RNA levels were twofold-tenfold higher in all five O lines relative to all five B lines, while hsp23 exhibited a smaller but significant increase. Thus increased hsp22 and hsp23 RNA levels correlate with the increased life span and increased stress resistance of the genetically selected O lines.
VIVONA, N.;MACALUSO, G.;FRENNA, V.;RUCCIA, M., J. HETEROCYCL. CHEM., 1983, 20, N 4, 931-934