Pressalanin B (1), (–)-anonaine (2), (–)-asimilobine (3), (–)-N-acetylanonaine (4), liriodenine (5), stearic acid (6), 6β-hydroxystigmast-4-en-3-one (7), 6β-hydroxystigmast-4,22-dien-3-one (8), costunolide (9), 11,13-dehydrolanuginolide (10), N-trans-feruloyltyramine (11), N-trans-caffeoyltyramine (12), N-cis-caffeoyltyramine (13), p-hydroxybenzoic acid (14), p-hydroxybenzaldehyde (15), methylparaben (16), and vanillin (17) were isolated from the flowers of Michelia compressa var. lanyuensis (Magnoliaceae). Among them, pressalanin B is a new 2H-pyran. The structures of these compounds were characterized and identified by spectral analyses.

中文翻译：

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来自 Michelia compressa var. 的新 2H-吡喃。兰屿

Pressalanin B (1), (-)-anonaine (2), (-)-asimilobine (3), (-)-N-acetylanonaine (4), liriodenine (5), 硬脂酸 (6), 6β-hydroxystigmast- 4-en-3-one (7), 6β-hydroxystigmast-4,22-dien-3-one (8), costunolide (9), 11,13-dehydrolanuginolide (10), N-trans-ferulylylyramine (11) 、N-反式咖啡酰酪胺 (12)、N-顺式咖啡酰酪胺 (13)、对羟基苯甲酸 (14)、对羟基苯甲醛 (15)、对羟基苯甲酸甲酯 (16) 和香兰素 (17) 从花中分离得到含笑含笑变种。lanyuensis（木兰科）。其中，pressalanin B 是一种新型的 2H-吡喃。这些化合物的结构通过光谱分析进行表征和鉴定。