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1、BioactiveMarineNaturalProductsBioactiveMarineNaturalProductsD.S.BhakuniCentralDrugResearchInstituteLucknow,IndiaD.S.RawatDepartmentofChemistryUniversityofDelhi,Delhi,IndiaSpringerAnamayaAC.I.P.cataloguerecordforthebookisavailablefromtheLibraryofCongressISBN1-4020-347
2、2-5(HB)ISBN1-4020-3484-9(e-book)Co-publishedbySpringer233SpringStreet,NewYork10013,USAwithAnamayaPublishers,NewDelhi,IndiaSoldanddistributedinNorth,CentralandSouthAmericabySpringer233SpringStreet,NewYork,USAInallthecountries,exceptIndia,soldanddistributedbySpringerP.
3、O.Box322,3300AHDordrecht,TheNetherlandsInIndia,soldanddistributedbyAnamayaPublishersF-230,LadoSarai,NewDelhi-110030,IndiaAllrightsreserved.Thisworkmaynotbetranslatedorcopiedinwholeorinpartwithoutthewrittenpermissionofthepublisher(SpringerScience+BusinessMedia,Inc.,23
4、3SpringStreet,NewYork,10013,USA),exceptforbriefexcerptsinconnectionwithreviewsorscholarlyadaptation,computersoftware,orbysimilarordissimilarmethodologynowknownorhereafterdevelopedisforbidden.Theuseinthispublicationoftradenames,trademarks,servicemarksandsimilarterms,e
5、veniftheyarenotidentifiedassuch,isnottothetakenasanexpressionofopinionastowhetherornottheyaresubjecttoproprietaryrights.Copyright©2005,AnamayaPublishers,NewDelhi,India987654321springeronline.comPrintedinIndia.ForewordThechemistryofmarinenaturalproductshasgrownenormou
6、slyinthelastfiftyyears.Onland,communicationbetweeninsectsislargelybypheromones.Becausethesemustbevolatile,theirchemicalstructuresareoftensimpleandmanyareeasytosynthesize.Incontrast,inanaqueousenvironmentcommunicationbetweenlivingorganismsdependsonsolubilityinwater.As
7、aconsequence,thechemicalcompoundsusedinthecommunicationcanhavecomplexstructuresandlargemolecularweightsaslongasthereisadequatesolubilityinwater.Sinceallformsoflifearesubjecttoperpetualcompetition,itisnotsurprisingthattheorganismsthatliveintheseaproduceanenormousrange
8、ofbiologicalactivity.Besidesthecompoundsthatrepelpredatorsbytheirtoxicity,therearethosewhichareattractivetomakereproductionmoreprob
