Pigments of fungi.: Part 70.: Total synthesis of (R)-semixanthomegnin and the X-ray crystal structure of (±)-7-chloro-10-methoxy-3-methyl-3, 4-dihydro-1H-naphtho[2,3-c]pyran-1,6,9-trione

被引：9

作者：

Cotterill, AS ^{[1
]}

Donner, CD ^{[1
]}

Gill, M ^{[1
]}

White, JM ^{[1
]}

机构：

[1] Univ Melbourne, Sch Chem, Melbourne, Vic 3010, Australia

来源：

AUSTRALIAN JOURNAL OF CHEMISTRY | 2003年 / 56卷 / 01期

关键词：

D O I：

10.1071/CH02169

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

(R)-Semixanthomegnin (8), which has been converted by others to the mould metabolite (3R,3'R)-xanthomegnin (9), is prepared in seven steps from (R)-propylene oxide (16). A single-crystal X-ray structure analysis of (+/-)-7chloro-10-methoxy-3-methyl-3,4-dihydro-1H-naphtho[2,3-c]pyran-1,6,9-trione (25) confirms the regiochemistry of the cycloaddition reaction between 2,5-dichloro-1,4-benzoquinone and the new, highly oxygenated, chiral butadiene derivative (2).

引用

页码：49 / 57

页数：9

共 27 条

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