环状化合物的立体化学在有机化学中起着十分重要的作用。
The important role of stereochemistry of cyclic systems in organic Chemistry has been well established.
天然环状四吡咯化合物包括卟啉、卟吩、细菌卟吩、异菌卟吩以及可啉等类物质，其合成研究是目前有机合成领域的热点之一。
The synthesis of natural cyclic tetrapyrroles which include porphyrins, chlorins, bacteriochlorins, isobacteriochlorins and corrins is presently one of the most attractive fields in organic synthesis.
天然环状四吡咯化合物包括卟啉、卟吩、细菌卟吩、异菌卟吩以及可啉等类物质，其合成研究是目前有机合成领域的热点之一。
The synthesis of natural cyclic tetrapyrroles which include porphyrins, chlorins, bacteriochlorins, isobacteriochlorins and corrins is presently one of the most attractive fields in organic synthesis.
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