Page 1. ?-rrrdrdnnvd 40..% 19,~ 3617to3b6M.1984 makd rb tbr i: SA MS N#WWWWSS FFMM ASPE%I LLUS FWEUUZUS Ii. A. PRIESTAP Focultad de Formocia y Bioquimica, Universidad de Buenos Aires, Junin 956, Buenos Aires, Argentina (Rereivpd in L'S4 20 Ilecpmiwr 1984) Abstract - Four new dimric nophthopyrones, fonsecinones A ... Page 6. 3622 HA PRIESTAP In the 60 M-lz spectrun of fonsecin in HZO-free (CD~)zcO solution and also ...
![7-(2,5-dihydroxy-6,8-dimethoxy-2-methyl-4-oxo-3H-benzo[g]chromen-10-yl)-2,5-dihydroxy-6,8-dimethoxy-2-methyl-3H-benzo[g]chromen-4-one结构式](https://image.chemsrc.com/caspic/089/41689-67-2.png)
![5,5'-Dihydroxy-6,6',8,8'-tetramethoxy-2,2'-dimethyl-7,10'-bi[4H-naphtho[2,3-b]pyran]-4,4'-dione结构式](https://image.chemsrc.com/caspic/230/15085-74-2.png)